system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can gravity be so weak (10^29 times weaker than the weak force) at the subatomic level, but at the same time be the dominant interaction at the macroscopic scale?
gpt
Because everything that has mass exhibits a gravitational field and the gravitational field is purely additive.

Contrast that with the electromagnetic force. Not everything has an electromagnetic charge and for the things that do, there are roughly and equal amount of positively charged things as negatively charged things, so they cancel out. At macroscopic scales, things are neutral.