system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How exactly do vector graphics work?

Here's what I know. Unlike bitmap images, vector images don't pixellate when you zoom in on them. I guess that's because they aren't made of pixels. A friend of mine tried to explain it to me, but it went right over my head.
gpt
Basically, a vector drawing files a list of instructions - draw a line from point a to point b,  draw a line from point b to point c.  Fill the enclosed area with a color, and so on.

Then, when you 'zoom in', the computer - effectively - makes the line sharper to take advantage of the higher resolution.