How does light 'know' the shortest path?

See the Invisible with Dyson.

top 3 play of the game and it’s not 2 or 3 #afl #football #footy #highlights

needed to have a taylor swift wedding debrief with my boys 🥰 #afl #adelaidecrows #taylorswift

daws really hit harley reid with a don’t argue 😳

Amazing Mini Fan With Colorful LED Torch! / ‪@Miniinventions1‬

Lasers Tell Us About The Last Solar Eclipse w/ Neil deGrasse Tyson #shortsfeed

Ultra light Easy Folding 3ta Purse shape umbrella unboxing☔️