It’s the sensors accuracy that is of concern at the 10 year mark, not the battery life

*Gestures vaguely at the state of affairs of the world*

You could do them by hand with substitution

I was expected to memorize the integrals for trig functions. I did not. I just did substitution every time until I eventually memorized the table right around the time I finished calculus lmao

The premise here is that imperialism stopped

I don’t think my suspension of disbelief is that strong