![](https://dormi.zone/pictrs/image/f4e8f992-1e6e-4082-864a-e8f84933aa16.png)
![](https://fry.gs/pictrs/image/c6832070-8625-4688-b9e5-5d519541e092.png)
This sucks, because smartphones could be such fantastic tools in a classroom. Not that I’m under the illusion that they’re being used in any sort of productive way (or even would be), I was once a kid scrolling through shitposts and memes in class. But having all of the textbooks in one place, the ability to record lectures and whiteboards for later review, and automated schedule management would’ve definitely made my high school education a lot smoother.
Couldn’t we send out two devices in different directions, wait a decade, have them shine light at eachother simultaneously, record when they receive the light, then send the times back to earth?