system
Given the following post, respond as if you're commenting on Reddit:
human
What is the difference between general and special relativity?
gpt
It's the difference between a map of your city and a globe of the world. One is nice and flat and only relevant to your immediate vicinity, geometry is easy, the other is curved and relevant to everything, but the geometry is a bit harder. Particularly, General Relativity tells us how energy and mass affect the larger shape of spacetime.