system
Given the following post, respond as if you're commenting on Reddit:
human
Could a spider support itself if it was giant, like in Harry Potter?

Theoretically speaking, would a giant, human sized spider make sense scientifically?

Please ignore how this question is phrased, you get the idea.
gpt
Probably not. Exoskeletons can't support creatures that large. The surface area to volume ratio means that the inside of the spider would become too heavy for the exoskeleton to support unless is was extremely thick. Also, insect and arachnids breathe through pores in their abdomens, so it is doubtful that enough air would be able to diffuse into a creature that large effectively.