system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do electrons know which path is least resistant?

In a ciruit, electrons will predominantly choose the path of least resistance. How do they determine which path that is?
gpt
I think there is a misconception hidden in your question. In a cricuit not all electrons choose the path of least resistance. Only more electrons take that path.

Imagine this as a river which splits up into several arms (with the same volume). in some arms the river flows very slow (this corresponds to high restiance) and in others very fast (which corresponds to low restiance). At the splitting point always the same amount of water flows in. The water (the electrons) is pressed into all possible arms. 

Now, go further downstream to a point where all arms are combined again. From which arm is most of the water coming over a given time period?

Since it takes longer for water to pass through the slow flowing arms.
Water trying to enter the slow (high restistance) arm might not be able to do that, because the arm is still full with slow flowing water. In the fast arm however, the old water has already moved away and has made space for new water - therefore in the end, more water flows through  this (low resistance) arm.