Subway has one step a fraction of an inch higher than the others

HY HOUSE HAS THIS MY TOES MIGHT AS WELL NOT EXIST

http://i0.kym-cdn.com/entries/icons/original/000/012/367/evilest.gif

I hate when stairs do this.

Engineers: *evil snickering*

It’s kind of crazy though. Like, your body/brain becomes so quickly adjusted to a pattern and then just a small fraction of difference sends you face first into failure. Beautiful.

They used this tactic in old castles in the days of hand combat. The 'home' side knew step was raised and would use it to their advantage to trip the attackers.

honestly, as much as it does to get people to pay attention, this is a dick move for blind people.

Yeah and the fraction is 19/20