This is just for fun.....

One day I stood at the lift in 5

^{th}floor. The lift-indicator showed that the lift is at 10^{th}floor. I wanted to go to ground floor and so I pressed the ‘down-arrow’.
Of course I always have a doubt. Which button I
need to press? Especially the doubt arises when the lift is in the down floors
and I need to go in the down direction. I think in this way: shall I press
up-arrow such that the lift comes up to me and takes me or shall I press
down-arrow as I need to go in the down direction. The whole dilemma is about
which thing I need to pursue first? Pulling the lift ‘

**up**’ to me? or the ultimate direction of my going ‘**down**’? The dilemma comes again when I need to go in the up-direction and the lift also stays at an upper floor.
Come back to our discussion. Luckily this time I
pressed the right button. Lift arrived at 5

^{th}floor and stopped. After I got inside, it started and took me to the ground floor.
Then I asked myself,

**total**how many floors the lift has travelled?
My thought process went like this: First, the lift travelled from 10

^{th}to 5^{th}floor. ie., 10-5 = 5 floors. Then after taking me in, it travelled from 5^{th}to ground, ie., 5-0 = 5 floors. So, it travelled 5+5 = 10 floors.
When I told this story to my wife, she laughed at
me and said “why do you calculate in a
round-about-way? lift travelled from 10

^{th}floor to ground floor. So it travelled 10-0 = 10 floors”
What has influenced me to go in a so called
round-about-way?

Probably the word ‘

**total**’. In order to find the ‘**total**’ number of floors, I might have brought two numbers in to picture and ‘**totalled**’ them.
Is this the influence of so called ‘mathematical
approaches’ learnt for years?

My point here is: Applying a little commonsense and logic to math funda really blossoms the beauty of math.

My point here is: Applying a little commonsense and logic to math funda really blossoms the beauty of math.

It made me stunned. An expert calculates every thing scientifically but a non expert without such method arrives at the answer so easily with common sense. A lay man financier calculates interest with his fingers whereas, for an educated a calculator is a must. Mokshagundam Viswesvarayya used to calculate the speed of the train by seeing his watch and counting the signal posts by sitting in a train without seeing speed-meter. K.Subrahmanyam

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