This is a topic I always get around to when unpacking for players how they might understand the need for quality sensual data in order for their brain to “best process” elements of technique.

One of the openers is “How many ways are there of getting out of this room/hall?”
Here the response is usually to count the visible exits – and so when I point out some examples of how to go through the door space (sideways, crawling, hopping etc) there is a groan that leads to an “Aha!” moment.

There is another set of examples to stimulate “Aha!” moments and that is optical illusions.

Here is a great set I found when reading a blog from a video analyst’s website:

In this amazing visual illusion by Edward H. Adelson, square A and square B are the exact same color!

If you click on the link below for an explanation and other examples you are finding more interesting stimulations!

http://web.mit.edu/persci/people/adelson/checkershadow_illusion.html