[Causality1]

Edited for incorrect post.

[yorwba]

> track the sun and calculate angle of reflection to hit a target

I didn't see anything about that in TFA, did you mean to comment on a different submission?

EDIT: I guess it's this one: https://news.ycombinator.com/item?id=21955247

[Causality1]

You're right. I must've mis-clicked.