Curbcut Effect
(src. wikipedia/ Michael3 https://en.wikipedia.org/wiki/Curb_cut#/media/File:Pram_Ramp.jpg )
I learned about curbcuts. Curbcuts are those litle ramps, made especially as accessibility features to help people bound to wheelchairs to get on stairs.
But what's even just as interesting: Curbcut Effect is the name of the phenomenon, when suddenly not just wheelchairs profit from this little feature, but every parent with a stroller or people having to transport heavy stuff.
So this applies to everything where you consider accessibiity for handicapped citizens that then would also be of use for everyone else.













