[pqh]

Let me put it this way: never have I heard an explanation in terms of classical mechanics. In my intuition, the billiard ball model of physics makes perfect sense. But a current taking the path of least resistance really seems like it "knows" the best way. And it's amazing.

[tannercollin]

That's a misconception. Electricity takes ALL paths in amounts proportional to each path's conductance.

If you have a 1000 Ω path and a 10 Ω path (in parallel), current will go through both paths. However, much more current will go through the 10 Ω path.

The current through each path ends up being the voltage applied across the path, divided by its resistance.

[planteen]

Yep. Came here to say exactly this (electricity takes all paths) and then saw your reply.