and I thought this had to do with light refraction lol
If like me you can’t see the picutre of the post, here is the original image:
reveal
It is simply polite to include a link to the original https://xkcd.com/2821 as per the Artist’s desires.
Yes, I saw the explain, but that isn’t to the actual origin.
I spent way too long trying to figure out why the guy and the ice cream shop were flying, and how he would move horizontally in he air…
I couldn’t tell what I was looking at until I searched for an explanation. All I could see was a person falling into some water past a floating ice cream stall. It’s supposed to be a beach:
https://www.explainxkcd.com/wiki/index.php/2821:_Path_Minimization
“we have a beach at home”
the beach in question
Path that maximises time would be some kind of space-filling curve. Maybe it does that off panel?
It’s to do with light paths and diffraction. The time maximising path still hast to be a valid path.