I’m working in a building with a revolving door out front and being a good boy, I try to use it as much as possible rather than the standard swinging doors on either side. So I’ve gotten a lot of hands-on experience with this thing that I missed out on all those years that I wasn’t a big-shot skyscraper office kind of guy. And all my passes through the door have made me wonder: how is it that you never hear about someone breaking an arm or a few fingers in one of these things? That door is heavy, moving fairly quickly and the timing for entering the door can be tricky.

I tried looking for either statistics or information on safety features that I haven’t thought of but google is giving me nothing. So what’s the story? Is there some mechanism that I’m not smart enough to have come up with? Or does the revolving door fall into some kind of mental sweet spot where it gives off just enough sense of danger to make everyone pay attention every time?