system
Given the following post, respond as if you're commenting on Reddit:
human
[Spider-Man] How thorough is spider-sense? Does it hijack Peter’s motor functions to get him out of danger, or does it just alert him?

Suppose someone throws a rock at Spider-Man. Does his spider sense say “incoming object behind you”, or does it say “small stone coming from 2 o’clock at a 10mph velocity, you have 1.5 seconds to duck”?

And furthermore, can he choose to ignore it? Or is it an instinctive override to pull him out of danger?
gpt
It depends on his training and experience levels. Usually it's instinctive, with some basic control of his motor functions. The first time it went off he jumped out of the way of an oncoming car without thinking. There have also been situations where he was around a super villain's alter ego (Hobgoblin, IIRC) and his Spider-sense was wailing without giving him anything specific. The longer he's been Spider-man, the better he gets at interpreting it, and reacting appropriately. He's been warned about things like unmasking in front of a security camera, which wire to cut on a bomb, and when someone is bluffing in a game of poker.

In the case of someone throwing a rock at him, the most experienced versions of Spidey would be warned as soon as you started thinking about throwing it, earlier versions would know as you picked it up, and all of them would get an "incoming" warning as soon as you started the windup. 

There are some exceptions; Venom is famously immune to the Spider-sense, and it gave no warning when Aunt May once clocked him with a vase. 

In *No Way Home* >!Dr. Strange pushes Peter's astral form out of his body, and his body is able to dodge without his input, presumably because of his Spider-sense.!<