When I first moved to the city, I thought the subway doors were like elevator doors and would just open if they hit resistance. So I jumped in between closing doors once and then closed on my face. I didn’t realize I had a big black mark on my face until I saw my reflection stops later. Anyway, people think they’ll just stay open, but the operator will close them on you. They’re cold about it. The warnings should be more severe like “beware of the closing doors…we’ll drag your body to the next stop. It’s not on us {shrug emoji}”