A drunk person wandering outside will always find their way back but a drunk bird probably won't.
Explanation: Random walk in 2D has a unity probability of making it back to the starting point as the number of steps approach infinity but random walk in 3D only has ~0.34.
You are viewing a single comment
TL;DR: birds can fly up and down so they are more likely to get lost
Thank you, OP put his thought out so confusingly
WHAT?