Her uncle had parkinson. This simple yet innovative solution helped him big time:
she questioned how her uncle walked up and down the stairs. Surprisingly, he was able to do this without any problem, but as soon as he stopped, he had trouble walking again. She decided to apply a “staircase illusion” to the floor by having the illusion of a staircase flowing throughout her uncle’s house. To her surprise, this simple solution was able to help her uncle move around the house faster and easier.
Source: TEDxDelft 2015 | Mileha Soneji | Empathy is the Key to Great Innovation – TEDxDelft
The Wiert Corner - irregular stream of stuff 