17. YOU SHOULD TRAIN YOURSELF HARD UNTIL YOU CAN SOLVE WHEN YOU HAVE “A BUTTERFLY IN YOUR STOMACH”.

When the exam starts, you may feel a kind of strain. And unfortunately, you may have a butterfly in your stomach. OMG…. One of the countermove of this, for example, is mastering a solution easy to memorize and to handle. “The tree diagram” is a good sample in problems of probability. The tree diagram is easy to memorize and to remember. It is also easy to handle and very effective for solving. In a book in Japan, I saw “The tree diagram is a pinch hitter who has an 100% batting average.” I agree. It’s very convenient.

So, I advise you that you have to memorize not only smart solutions but also “primitive” solutions. The latter will help you breakthrough when you face some obstacle during solving.

See you next.

Nasuno Kumao