Have you ever noticed that while crossing a busy road, our mind judges continuously the positions and speeds of several vehicles and accurately finds the required gap in which to move forward. If a computer is asked to perform the same task, it would probably require a processor much more powerful than that of our home PC! However, the irony is that, for simple additions or multiplications, we depend on a pocket calculator. We all make mental calculations from time to time, though we may not always be aware of it. If our mind can make such complex judgements as is required to cross the road taking into consideration the direction and speed of all the moving objects, it is certainly able to manipulate a few figures. Probably, it is the cumbersome calculating devices we have probably been taught right from the good old school days – which require pencil and paper or a calculator to work out. Because of this lack of encouragement for mental calculation, it has prevented us from becoming efficient mental calculators.
Have you ever thought why…….. 1 means “one”, and 2 means “two”?
The roman numerals are easy to understand but what was the logic behind the phonecian numbers?
It’s all about angles !