How do you differentiate between knowledge and belief?

an_onanist@lemmy.world to Asklemmy@lemmy.ml – 72 points –

I'm not interested in what the dictionary says or a textbook definition I'm interested in your personal distinction between the two ideas. How do you decide to put an idea in one category versus the other? I'm not interested in the abstract concepts like 'objective truth' I want to know how it works in real life for you.

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That's a pretty simple distinction, but you've asked for us to define abstract concepts without using definitions or abstract concepts. So let's just say, knowledge is what you know and beliefs are what you believe. A belief implies some level of doubt, while knowledge is just the information you have in your head. There is a lot of overlap. I know that the sun will rise tomorrow, because I understand how the earth rotates and orbits the sun. I believe it will happen because I understand physics and observable phenomena. Put it another way, it is a high-confidence belief based on the knowledge obtained through observation and study. Some beliefs are based on nothing more than hope, and some knowledge is beyond any doubt. I believe the Phillies can win the World Series, but I know our bullpen pitches cantaloupes and our hitters are streaky as shit.

Your last example reminds me of someone editing Wikipedia to list Ronnie O'Sullivan as the winner of the World Open, about 20 minutes before the final match finished.

They were right, and anyone would agree that it was all-but-certain, but it hadn't actually happened yet.

What if you should have some doubt (belief) but due to ignorance or hubris do not and so you elevate a concept to 'knowledge' that should not rightfully be there? I'm not trying to be argumentative, I'm genuinely curious about that gray area of misplaced confidence.

What you're asking about there seems like it's really: "Is something being knowledge vs belief subjective or objective?"

The answer, just like for "is cereal soup?", is that it's all semantics. It's not like there's some Authority who's created the Platonic Form of Knowledge that Beliefs cannot partake of, and there's a clear delineation between Knowledge and Belief. We're just using these weird shapes, sounds, hand gestures, or whatever else to try to do telepathy and get our thoughts into someone else's head. Like all semantic questions, what this comes down to is: have you chosen the right word to convey your thought? If people seem to not be getting it, try the other one.

It sounds like you’re interested in epistemology. Take a dive into this Wikipedia article and give at least the parts on Justified True Beliefs a read.

No I'm not. I am not interested in academic study. I am interested in real world application. I am aware of justified true belief and that most people don't apply it. My curiosity is in how people acnually think about the concept.

That's a fair question, but we're in danger of conflating two different concepts. Knowledge is the information, and belief is the action. It's a little bit like having money vs spending money. You can have money, you can spend money, and you can have spending money, and you can spend money you don't have. These are all slightly different concepts despite using the same words.

When you think you know something, but you are mistaken, we call that a "belief" even though you did not doubt it. You believe you know something without a doubt, but you are wrong. You do not know, and you should doubt your belief. But you would never describe it as a belief, because you do not believe you do not know for certain.

I’m confused. You don’t know that the sun will rise tomorrow - you believe it will. Science is our best guess at how the universe around us works. Geocentric was how we believed the universe worked until that theory was proven to be wrong.

You know the current theory, and based on that knowledge you can believe it will rise. There could be some phenomenon that will turn the sun dark for 7 days that is not part of the current model. It’s unlikely, but possible.

Knowledge is the understanding of that which will not change. Yes, you can modify the theory tomorrow but it will not be the same theory as today. That’s why it’s knowable

Anything is "possible". Forecasts of the future can't be 100%. But not everything is plausible. If you round to 100 significant figures, the probability of the sun rising tomorrow is 100%. You'll never get to true 100%, past, present, or future. Even after watching something with your own eyes and watching the video documentation 100 times over. It's "possible" someone faked the video, and eyewitness testimony is known to be incredibly bad evidence for a reason.

Knowledge is strongly backed by evidence. Belief ranges from "the evidence is inconclusive/not strong enough/doesn't exist" to "the evidence can't exist".

knowledge is provable, repeatable, demonstratable. faith is by its very nature none of those.

Just to help, you can't have knowledge about something that is based around faith. For example, the Bible requires faith for you to believe in God, however you can have extensive knowledge about what the Bible says without actually believing any of the religious bullshit.

One could argue that the more knowledge one has of the bible, the greater degree of faith one needs to believe in it.

At some point on that linear curve, a make or break decision needs to be made. Here, I made a graph:

But do you do any of this with what you "know"? Or do you choose to believe it because it is known?

i do what applies to events in my life and watch others do the rest snd use their examples to confirm or deny what has been posited

I'm a Marxist-Leninist, so the dialectical theory of knowledge. What starts as ideas are tested and confirmed or denied in reality, which then sharpens ideas to be retested and confirmed or denied in reality again, in a spiral. Ideas come from real, material conditions, and it is through this cycle that theory meets practice, sharpening each more effectively.

What's Marxism have to do with it? Sounds exactly like the scientific method to me. Applying it to politics is an unnecessary step in this discussion.

How familiar are you with Dialectical Materialism? That's a Marxist conception, very similar to the scientific method. Marx wasn't just an advocate for Socialized production and eventually Communism out of any moral superiority to Capitalism, but because he applied Dialectical and Historical Materialist analysis to Capitalism to predict where it was headed: monopoly and centralized syndicates, ripe for siezure and public planning.

The Dialectical theory of knowledge is similar to an endless refinement and spiral of the scientific method.

What about the ideas that can be neither confirmed nor denied like the existence of extraterrestrial life or a machine of 100% efficiency?

We just choose who to believe, I don't KNOW how computers work, I've just chosen to believe it's thinking sand and not some kind of ghosts/magic, I don't even have tools or any other means to test it, I mean why we even trust those IT guys in the age of internet, when the access to knowledge is abundant it's weird there's no conspiracy theories about that, like we see now in all others domains, bunch of armchair specialists sitting in their parents basements knowing better than specialists about medicine, climate, earth shape and everything

Technology is magic. I know how to operate a lot of it, but I have no idea of the inner workings. I'm poking my fingers on a lighted piece of glass with liquid inside to type this message... And that works because some wizards a thousand miles away are using angry rocks to boil water to make domesticated lightning.

The veil lifts too easily and I hate it.

I would say that beliefs are unprovable, and knowledge is provable. If I claim the sun will rise tomorrow, we can test that. If I claim god exists but is hiding, we cannot test that. The former is knowledge, the latter belief

Degree of certainty is the difference

many are very certain in their beliefs though

That doesn't make them correct. The strength of the belief has no bearing on reality unless it's combined with evidence to warrant that belief.

literally what I just said, did you respond to the wrong comment?

It was quite early for me. I shouldn't post when delirious.

I define it by whether something is independently verifyable.

I am told that there are 8* planets in our solar system, and where they are located. If I wanted to, I could buy a big telescope, point it at the sky and find all 8.

I am told that it is possible to boil water through nuclear fission. If I had the means, I could take a number of resources, spend decades researching nuclear physics, build my own test reactor, and verify that this is possible.

I am told that the earth is flat. I could get a pilots license, buy a plane, and fly to Antarctica to see the ice wall. I would find that there is no ice wall, just a number of scientists who are very passionate about ice samples. Therefore, it is not independently verifyable.

I don't have the money to verify all of these claims, but they are all claims that have been verified by hundreds, if not thousands of independent people and organizations throughout history.

Knowledge = Belief + Evidence

What really matters is how good of a critical thinker you are, and what you'll accept as evidence, but if you're decently educated, you should be able to manage it. The key is not accepting secondhand evidence from untrustworthy sources, and to seek firsthand evidence that you can see with your own eyes.

As for "Objective Truth", that doesn't exist. Not only are our experiences obligatorily filtered through our subjective human perceptions, but relativity allows for multiple conflicting truths to exist simultaneously in spacetime, so it literally can't exist, and even if it could, we would be blind to it.

I don't classify ideas in my head into those two categories like that. They are all beliefs. I have a sense of how confident I am of each idea. Like how surprised I would be if they were proved wrong. And I try to maintain awareness of why I have that confidence, like other beliefs that support it, evidence, etc.

That's imperfect, like I can't claim that there aren't ideas that, if challenged, I'd think about what my supporting evidence is and come up with bupkis. Anything is up for doubt and reevaluation.

I feel pretty strongly that this is the right approach, and that people failing to have a similar approach is a serious problem in the world.

There should be absolutely no room for any kind of personal distinction between the two.
Knowledge can be proven.
Faith/belief cannot be proven.

If you can prove something is real then you cannot believe in it.
I don't believe the moon is real because I have knowledge that it is indeed real, and I can prove it by telling you to just look at it.
I cannot factually know that God doesn't exist because I cannot prove that using any kind of experiment or test, so I cannot "know" that it's true no matter how strong my belief in that statement is.

Any "personal definition" of either of those is factually wrong. If we could all walk around with our own personal meanings behind concepts we wouldn't have a functional language.

As neat and tidy as your explanation is, I think you are vastly oversimplifying the concept.

You say the moon is real because you can see it, and you can prove it's there by telling other people to just go look at it. Alrighty then, I've seen bigfoot. In fact, lots of people say they've seen bigfoot. Therefore he must exist too, right? The photos "prove" his existence just as much as you pointing to the sky saying the moon exists cause there it is.

Now, I realize that there's probably some degree of hyperbole in your statement, so I'll walk this back a little. If the defining metric of your separation between these concepts is whether the hypothesis can be proven through experimentation, that's all well and good. However, I would argue that, in 99.9% of cases, it's still a belief statement. Let's continue with the moon example, but, rather than "seeing is knowing", let's apply the same standard that you applied to God. So, you "know" the moon exists, not just because you can see it, but because it's existence can be empirically proven through experimentation. What sort of experiments would you conduct to do that, exactly? Have you done those experiments? Or, like the rest of the rational world, do you accept that scientists have done those experiments already and decided, yup, moon's there? Cause, if you're taking someone else's word for it, do you personally "know" what they are saying is true, or do you believe them based upon their credentials, the credentials of those who support the argument, and your own personal beliefs/knowledge?

As another example, let's imagine for a sec we're philosophers/scientists of the ancient world. I have a theory that the heavier something is, the faster it will fall. You may know where I'm going with this if you remember your elementary school science classes. I believe in the power of experimental evidence, and so, to test my theory, I climb to the top of the Acropolis and drop a feather and a rock. The feather falls much more slowly than the rock. Eureka, I've proved my theory and therefore I now KNOW that an object's weight affects its fall.

Now, anyone not born in 850 BC Athens in this thread will point out that it's a flawed experiment, since I'm not controlling for air resistance, and if you conducted the same experiment in a vacuum chamber, both objects would fall at the the same rate. However, the technology to test my hypothesis with all of the salient variables controlled did not exist at that time. So, even though it's now widely known that my experiment was flawed, it wouldn't have been at the time, and I would have the data to back up my theory. I could simply say try it yourself, it's a self-evident fact.

Finally, your statement about subjectivity of definition being an obstacle to functional language is so alarmist as to border on ridiculous. If this question were "how do you personally define the distinction between 'yes' and 'no'", then sure I can get on board a little bit more with your point. However this is much more like 'twilight' vs 'dusk'. Crack open a dictionary and you'll find that there is a stark, objective distinction between those terms, much as you pointed out that belief and knowledge have very different definitions. For the record, since I had to look it up to ensure I wasn't telling tales here, sunset is the moment the sun finishes crossing the horizon, twilight is the period between sunset and dusk when light is still in the sky but the sun is not, and dusk is the moment the sun is 18 degrees below the horizon. So, I know that these are unique terms with specific, mutually exclusive definitions. But let me tell you something, I believe that if I randomly substituted one term for another based purely on my personal whimsy, people are gonna get what I mean regardless.

That's incredibly naive I'm afraid. This sort of logic works in very simple cases, but quickly breaks down in any complex scenario. The reality is that a lot of knowledge cannot be easily verified because it's just too complex. Take a peer reviewed scientific study as an example, the study might reference a different study as its basis, that references another study, and so on. If one of the studies in the chain wasn't conducted properly, and nobody noticed then the whole basis could be flawed. This sort of thing happens all the time in practice.

What you really have is an ideology, which is a set of beliefs that fit together and create a coherent narrative of how the world works. A lot of the knowledge that you integrate into your world view has various biases and interpretations associated with it. Thus, it's not an absolute truth about the world, but merely an interpretation of it.

Knowledge is something that can be prov

Saying something can be proven in principle isn't very useful in practical terms. The fact of the matter is that the real world is simply too complex for the human mind to fully understand from first principles. Science is fundamentally about creating models of the world that are useful approximations of reality, it's not a black and white thing. Asimov explains this well here https://mvellend.recherche.usherbrooke.ca/Asimov_anglosaboteurs.pdf

Knowledge is evidence based and has certainty based off of repeatable observable data. Belief is educated hope, based on the unknown when compared to the known.

Belief doesn't need confirmation, but knowledge assumes some confirmation.

Knowledge is what happens when you've evaluated enough evidence to reject the null hypothesis that something is false. If you haven't seen the evidence, but still think it's true or false (you don't lack belief), then you have a belief about it. As such, knowledge is a type of belief with extra justification.

If I've reviewed enough evidence I'm comfortable saying I can reject the null hypothesis, that is I have a belief that it's knowledge, I'll call it as such. If I haven't, I'll couch my confidence in my belief accordingly.

I think this is a really interesting question. To me, if I hear a claim, I might say I accept it as knowledge or believe it as a worldview.

For example, I get irked by people asking if I “believe” in climate change. To me, it’s not a matter of belief: there is a body of knowledge being scrutinised by extraordinarily smart and talented people. I accept the existence of and need to mitigate climate change.

On the other hand, do I believe we’re not alone in the universe? I can’t rely on knowledge, it’s a lot of intuition.

I have seen a lot of scientific evidence that shows how life can form from natural processes. Using that and my understanding of evolution, I have little doubt that there is life on other planets. I'm also convinced that there exists what we would call intelligent life on other planets. When it comes to life that can traverse the universe I hesitate to have any confidense. If we find it to be possible, with warp technology or wormholes, then I will assume it could have been discovered somewhere else as well. The biggest hold up I have for such advanced species is the tendency for extinction from societal competition or extraplanetary forces from asteroids to star death.

Belief regards opinions, in which people have a free choice to accept or reject the idea. There is no notion of rightness or wrongness.

Knowledge regards conclusions from a set of axioms, in which people who accept the axioms are honor-bound to accept the conclusions. To reject the conclusion while accepting the axioms would be wrong.

In my life, this governs when I can freely choose and when I am obliged to accept a claim based on whether I've accepted previous claims.

So, if we haven't studied the underlying axioms or foundation of a conclusion, we cannot have knowledge of it? That seems to imply the only things we have knowledge of are the things we have invested significant time and energy into. It's that correct?

You don't need to study axioms in order to accept them, but once you accept them, then you must accept any soundly derived conclusion from them. Belief doesn't need to be logically consistent, but knowledge does.

As for investing significant time and energy, I would say that that depends on things such as the length of the chain of reasoning or the difficulty/cost of testing a hypothesis or how closely observations match your intuition. Some knowledge is cheap to acquire, such as "the sun rises in the east", because we can observe it directly and we can clearly identify the direction of east and the sun's path in the sky is very stable from day to day.

I think everyone inhabits a sort of superposition of all possible worlds consistent with their sensory observations. But there are some of those possible worlds with which we identify more strongly—where we feel more ourselves. So belief is a kind of probability multiplied by self-recognition.

For example: “We believe these truths to be self-evident, that all [people] are created equal”, etc.—it’s not an assertion of objective truth, it’s a declaration of which world we choose to live in.

So the stronger the feeling of identifying with a concept, the stronger the belief that it is true?

That’s one factor; objective (or Bayesian) probability is the other.

Like, there are too many things that might be true, or that might come to pass, for me to consider all of them at once. So I filter out most of them by dissociating myself from the worlds in which they’re true: saying “I don’t believe that will happen” isn’t saying it’s impossible, it’s saying “I don’t recognize myself in the person that would happen to”.

But the more you commit your sense of self to worlds that are tenuous or impossible, the greater the likelihood that you end up in a real situation where you no longer recognize yourself—and then you face an identity crisis.

There is an overlap though, but first I'll answer your question.

Belief is anything you take as a truth, often without any means of proof. There are conscious beliefs and I guess subconscious ones.

Knowledge is anything you are aware of; your personal recollection of life data.

Therefore anything you consciously believe in requires you to first acquire knowledge of it.

Things get complicated because we usually take in most knowledge as facts and truths, which means we believe in a lot of what we know. But it's not easy to always know which knowledge actually doesn't represent reality.

For me it's the difference between a preponderance of evidence suggesting such, and something being applied and proven until any doubt is removed.

For example, I was trying to find studs in drywall recently (last house was plaster and lathe), and looking at things Socratically, I could use a stud finder but I might be drilling into conduit or a pipe. So I was like "I can use magnets to hit drywall screws to try to confirm the presence of a stud", and it seems reasonable, but I've never attempted it in practice, and there could be all sorts of things a magnet could hit, since I've no experience with drywall, how close a steel pipe could be, any of that. So it's a belief. It'd be rather arrogant of me to accept this as a reliable method without testing this method, drill through a pipe and wind up with egg on my face.

So, I tested this by getting two magnets to stick vertically, then measured 16" out, got 2 more magnets to stick vertically, kept doing that until I hit half a dozen spots, all 16" apart. Drilled a pilot hole, felt resistance and the smell of wood, drilled a couple more.

I think somewhere between mounting a flat screen to fixing 3 closet shelves it became knowledge, not sure exactly when, but all the doubts were removed and it never blew up in my face. I can just waltz in a room and sink a bunch of holes in the right spot now without being skeptical of some electronic stud finder.

I guess what I mean to say is that testing something and having it consistently work and be reproducible is what leads to knowledge imo

That is like the home owner's application of the scientific method: test the hypothesis until you decide it is a pretty solid system

Probably doesn't answer your question completely, but I'm a big fan of the phrase "my understanding is . . . " In other words, this is what I "know" as fact, but I'm aware that my knowledge could be wrong or insufficient and I'm willing to be corrected or updated. I use this phrase almost any time I'm asserting something as fact, as a kind of cya.

I’m not interested in what the dictionary says or a textbook definition I’m interested in your personal distinction between the two ideas. How do you decide to put an idea in one category versus the other? I’m not interested in the abstract concepts like ‘objective truth’ I want to know how it works in real life for you.

Huh. I guess I don't categorize concepts like that... is it normal to? I believe what I think is true. The certainty of that belief depends on either my own knowledge of supporting facts; or the credibility of someone else's knowledge in a field I'm not familiar with. If new knowledge reveals a belief to be incorrect, I recognize that at some point I succumbed to bullshit, and need to adjust my belief accordingly.

I want to know how it works in real life for you.

What works for me in real life is know as little as possible, view all beliefs as clouds moving across the sky

When I challenge my established concepts with new ideas or angles, and realize my previously held truth doesn’t hold up to scrutiny, or is reinforced or expanded upon. For example, “is a hot dog a sandwich?” makes me reconsider how so much depends on context, and how we as humans crave labelling and categorizing to the point of it being detrimental (see biological sex vs gender, Star Trek edit wars, classical music and pornography cataloguing, etc)

If so much is contextual, is there no knowledge based on truth or fact?

Belief is seeing that the light is green even when it isn't.

Knowledge is accepting that the light is red when it is.

Believing that the light is green will not help you when you get flattened by a truck. Knowing that the light is red will keep you from dying pointlessly.

Knowledge is the first step on the path to wisdom. Belief is delusion.

If you cannot demonstrate, or point to a demonstration, then all you can do is guess. You can make an educated guess based on other demonstrations, but if you cling to your guesswork as if it were demonstrated to be true, and you internalize your guesswork as part of your identity, and you refuse to let go of it when confronted with contradictory demonstrations, then you are a fool.

Your description makes belief sound like willful ignorance.

It sounds like the real challenge is knowing when you have enough information to convert your educated guess into full-blown knowledge

Your description makes belief sound like willful ignorance.

Maybe, maybe not. In the absence of evidence, belief may be harmless, though somewhat pointless in the sense of Hitchen's razor:

What can be asserted without evidence can also be dismissed without evidence.

and Newton's flaming laser sword:

That which cannot be settled by experiment is not worth debating.

It certainly becomes willful ignorance if the believer avoids and/or actively rejects contradictory evidence.

It sounds like the real challenge is knowing when you have enough information to convert your educated guess into full-blown knowledge

The educated guess (hypothesis) becomes knowledge when it can be demonstrated by direct experiment rather than inferred/constructed from related knowledge. Also it's important that the educated guess be testable/disprovable somehow, at least in theory (Popper's falsifiability principle):

Every genuine test of a theory is an attempt to falsify it, or refute it.

So, belief is benign when it exists in an untested/untestable area and the believer is not bound to the belief emotionally. Belief is malignant when it exists in a tested area or when the believer clings to the belief emotionally. Belief is either harmless or extremely damaging, but in either case of no practical value.

For me, everything is a belief unless it satisfies the following criteria:

  1. It is generally accepted as true among experts
  2. There is ample evidence that is both personally convincing and leaves no room for alternate interpretations (not the same as #1, since many fields have "commonly accepted knowledge" that is generally acknowledged as most likely true but has no evidence to back it up)
  3. It is specific enough that it cannot be interpreted in a way that is misleading

I find that the one that trips up most people is #3, since some people speak in technically true but overly broad statements and the listener ends up filling in the gaps with their own biases. The listener leaves feeling like their biases have been confirmed by data, not realizing that they have been misled.

In the end, according to my criteria, very little can be categorized as true knowledge. But that's fine. You can still make judgements from partial or biased data or personal beliefs. You just can't be resolute about it and say that it's true.

Belief is either something I want to be true, or seems true although I don't have solid evidence. I believe that in the universe there will be many worlds with living beings that eventually evolve to be comparable to humans in mental capacity and the ability to create, but that due to how space time works we will never directly interact with them. They won't be close enough, or our time periods of existence won't match up if either of us attempt interstellar travel. Millions of years is a blink of an eye in the scope of the universe, but it is so vast that the odds are high that another planet will have similar conditions for carbon based life, not to mention other possible forms of life.

Knowledge is supported by evidence. It might not be a perfect explanation or understanding, but it is what is known based on the current information. We now know planets exist around other stars, but before we could observe them it would be a belief to say they existed. The difference is supporting evidence.

Knowledge can be externally verified by an independent party.

Belief can be corroborated but not verified.

Knowledge is justified true belief.

You can't know whether you have it or not.

Keeping a close eye and tight rain on bias and fallacy, observation beats word of mouth. A peer-reviewed scientific study is exactly equal to observation.

Mathematical proof is also observation.

Lack of observation does not in any way indicate lack of truth. Because you feel or don't feel some way and have or have not seen something happen to someone else in no way influences whether something actually happened to someone else. Our perception filters are incredibly bad.

Appeal to authority means very little as single people easily get biased. Discount anything said if the person telling you the truth stands to gain money power or time from it being believed.

Knowledge can be proven, like how a beautiful sunrise proves the existence of god. /s

There's no god. As soon as we get that point across, we can start meaningfully improving things.

From many perspectives the two are the same and that ís a huge problem

For knowledge, I first try to contextualize the piece of thinking into a human framework. Once I did this, I ask myself if the piece of thinking can be known by any system that can be replicated. If this is the case, then I look into it, to get a grasp of how the piece of thinking became a piece of information and the context in which it was tested. Then I adopt it, trying to remember that context.

A belief I just decide it is true. I have personal rules for it too. 1) Overall, I'd like it to be a part of my life because it makes me feel better than not having it, and 2) it doesn't hurt anyone else, as far as I know.

Obviously, off the top of my head.

Belief is overarching concepts, knowledge is specifics, many in this thread are conflating belief with faith

I believe in science because I have knowledge of the scientific method.

A belief is a headline that seems to be accurate. Knowledge is when I actually read the article and checked other sources.

I have knowledge. People who disagree with me have beliefs. /s

nah but for real its all the same, innit? it's just a matter of how well supported you think your thoughts/beliefs/knowledges are. if i was drawing that kind of a distinction in my head, wouldn't that mean that i'm thinking things are true that i simultaneously know are false? if i was gonna have 'knowledge' and 'beliefs' rattling in my head as separate things, that seems like me it'd smack of willful self-delusion.

Belief is when a claim comes from a source I trust. In some cases, it’s a source I’m choosing to trust.

Like, my nephew is staying with me. He’s had meth issues in the past. His alternative is a shelter. He claims that he has a seizure disorder, and that puts me in a difficult spot because he says it gets worse on the street and also in shelters.

That’s pretty believable, but there’s a part of me that’s aware it could be a manipulation, this whole claim. I haven’t asked for evidence, despite the feeling of doubt.

This is a belief of mine. I am choosing to believe his claim.

If he were to show me authenticatable hospital paperwork documenting the seizure disorder, then it would be knowledge. Then I would know.

This is an example of the difference between the two in my own life right now. It’s a belief because to a certain degree I’m taking his word for it.

Incidentally this is the same way I think the word works in religion. People believe in God because they choose to. I feel like I know God exists, because I’ve encountered it during mushroom trips. But others, who haven’t had those direct contact experiences, believe.

Facts are made up by humans. If an opinion of mine regarding an empirical argument conforms with the general good of the public I prefer to spend time with, I accept it as a fact. When my opinions contradict with this, I accept that I believe it this way, considering neither options are testable or objectifiable.

I don't. Everything I think is true, I have various evidence that it is. If the evidence is stronger, the surety is stronger. Think, believe, know... all the same thing, all dependent on evidence.