Long time ago, an anthropology professor asked me why human beings are most comfortable with multiples of 5 or 10 and not 3 or 7 or 9. I found the question to be quite naïve and struggled to come up with an answer. It may have been an accident or some fancy of a scientist or someone important liked the numbers 5 or 10 over 3, 7 or 9. The answer surprised me. Human beings have 10 hand fingers. Counting was easy when the number of fingers, 10, became the basis of counting. Simple, but profound.

Answers to many issues that puzzle us can be as simple, but we generally refuse to see what is obvious.

In the same context, I liked this quote – Everything has been said before, but since nobody listens, we have to keep going back and beginning all over again – Andre Gide