system
A chat on subreddit /r/NoStupidQuestions
human
Newtons laws work until you hit a certain speed/gravity threshold, then general relativity takes over. Newtons laws aren’t “wrong” per se, just insufficient for larger numbers. Newtons laws got us to the moon, got planes off the ground…they didn’t stop being true.
gpt
It's not really a threshold.  It's more like their amount of 'wrongness' grows as speeds increase.  They're wrong even at slower speeds, but the error in using them is something we can safely ignore.  The speed (or gravitational potential) at which the error is something we can not ignore varies with application.