The rhythm of stairwalking
I am on vacation in northern Chile and encountered an interesting staircase in one of our hotels. The uppermost step was a little higher than the others, causing the whole family to stumble almost every time we passed it on the way upwards. Similarly, we always got a few extra centimeters when walking down, making us almost fall over when starting the escalation. This staircase reminded me about action programs, the anticipation of actions based on a perceived rhythm....