These things are dangerous! If you're an able bodied younger stud (like myself) then there shouldn't be a problem. But imagine an elderly lady using a walker trying to time this thing while someone on the other side is getting it cranked up.
I witnessed this first hand the other day. This poor lady almost got knocked on her ass! I felt so bad for her. Trying to negotiate a massive piece of glass technology with failing health and a walker. I think the intention of these things is to conserve energy, but we have to be realistic.
And cars don't stand a chance with these things!
In the new world, there will be no revolving doors at key places like hospitals where sick and elderly people frequent.
AND SO IT SHALL BE WRITTEN!