Judging by their signage -- despite living a socialist country -- the French aren't particularly kind to people in wheelchairs. And this was the sign in a children's science center, the
Cité des Sciences et de l'Industrie, which I think means "Darwinism doesn't happen on its own, children."

It appears that in the event of an emergency, the wheelchair-bound are to be left to their own devices while the walking flee.