I still don't know how Cap survived that punch from Thanos

I don’t know if he actually did. I had initially thought that when Thanos used the Time Stone to restore Vision’s Mind Stone, it might have also revived Cap in the process, but I’m not entirely sure.

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I think the theory was that he didn't. Thanos killed him but then revived him when he used the Time Stone to recover the Mind Stone from Vision

Cap has knocked out Hulk in comics. He's not weak.

My father when I tried stopping him from putting hands on mom again (I failed)

He didn’t. He died. But when Thanos reverses time to get the mind stone cap comes back alive

He’s a super soldier…

Idk there was a theory out there where this thanos wasn’t really trying to kill people so he held back his power quite a bit. He wasn’t trying to kill people to let the stones decide their fate, if they were worthy enough to remain alive after the snap

I think the biggest reason why was because it's a movie and it was written that way.

Like wtf

I still don't know my self