I use that Moses trick a lot. <3 Though this video reminded me how crippling my number dyslexia really is.
http://twitter.com/MaryKateClark Marykate Clark
Historically, this is part of the problem with standardized testing. Where context based on experience may be significantly different between those who design the tests and those who take them.
It’s very interesting to see demonstrations that reveal subconscious mechanisms at play. =-) This is my kind of geeky fun. (Apart from video games… and physics.)