system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:If the first four dimensions are length, width, height, and time, and scientists say there are many more dimensions, what are these other dimensions?
gpt
The other dimensions in string theories are spatial dimensions, like length, width, and height, but they're essentially "curled up" very small so that we don't notice them. Note that we don't actually have any experimental evidence of these extra dimensions. They're just necessary to make the math in certain string theories work.