Why shouldn’t you pull out knife from someone who got stabbed?

Question

I heard people say that if you or someone got stabbed, you shouldn’t take out the knife. but why? isn’t it better to take it out?

In: 2

Answer 1

as long as the knife stays in it mostly plugs the hole

illustrated with a plastic bag and water, https://youtube.com/shorts/fRF37l4NoT4