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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.

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[-] neptune@dmv.social 13 points 1 year ago

Gravity gives up and down a lack of symmetry that left and right maintain. A drunk bird is more likely to fall than fly to the moon.

Also, in materials science, randomly walking atoms (Brownian motion) in a crystal structure displace roughly at, if I recall, the square root of their velocity, on average.

this post was submitted on 05 Aug 2023
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