Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

That makes no sense to me. One particle goes in one direction at a particular velocity and another particle goes in another direction at another velocity. They diverge over time. When you travel through time, which particle’s path do you follow through space?

I often think along the gp’s lines and would love an explanation of why it’s wrong?



It all depends on your point of view (literally, frame of reference). The Earth can be considered:

- stationery (geocentric observer)

- orbiting the Sun (heliocentric observer)

- spiraling about the Sun (galaxy-centric observer)

All of these are simultaneously correct and bonkers in conjunction. Hence, you need a frame of reference if you're specifying movement.




Consider applying for YC's Winter 2026 batch! Applications are open till Nov 10

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: