There was a story that i'm having trouble finding now, where researchers figured out a test for who would succeed in a compsci program.

It didn't matter how many questions you got right on the test, but rather, if you answered the questions in a consistent matter. even if you were wrong, as long as you were wrong consistently, you'd do well.

If you saw a question, and then a very similar problem 3 pages later, and answered them wildly differently, you wouldn't make it.

the conclusion was that if you were building patterns in your brain, or using logic to build up answers, you were good to go.