Earlier this year, I posted a blog entitled “Tease Your Brain.”  It offered 10 brainteasers that showed how our preconceived notions, combined with the brain’s tendency to see what it wants or expects to see, greatly affect how we solve problems and make decisions.

To my amazement, it quickly became one of the most popular blogs I’ve ever posted in terms of the number of hits and reader comments. So in keeping with the Hollywood tradition of following up a huge hit with an even better sequel, here’s another round of brain teasers to test your wits.