Left – Right

Nature loves symmetry! Human body is symmetrical. The left and right halves of the human body are mirror images with respect to each other. Though the left and right parts look alike, their internal composition is not symmetrical. So the left and right parts have different roles to play.

So, it is up to us, to decide as to which part as to be used first. Left or right?

When I was young, my relatives would ask me to step out if the house by first using the LEFT leg, and then the right leg. It was very funny hearing them say that! What if I keep my right leg first? Why left leg first? I got the answer years later and I write a blog on that!

The scene of relative asking me to step out in that manner and me questioning that repeated in a new form. Binary search tree! For searching an element in a binary tree, check if the number is less than the root first. If yes, move to LEFT sub-tree, or else right sub-tree. Why should I check if the number is less than the root first and not the other way round, even though the probability is equal?? Same situation right?

The reason is here-

The human brain has two sides – LEFT brain and right brain. Though both are under one’s control, they perform different tasks.

The left brain uses logic, but right brain uses feeling. The left brain is detail oriented, whereas right brain is “big picture” oriented. Facts rule in the case of left, whereas it is the imagination for right. Left brain concentrates on words and languages, whereas right brain concentrates on symbols and images.

Left deals with science, whereas right deals with religion and philosophy. Left brain says “play safe” whereas right brain says “Take risks”

"Our personality can be thought of as a result of the degree to which these left and right brains interact, or, in some cases, do not interact. It is a simplification to identify "left brain" types who are very analytical and orderly. We likewise certainly know of the artistic, unpredictability and creativity of "right brain" types. But each of us draws upon specific sides of our brain for a variety of daily functions, depending on such things as our age, education and life experiences. The choices of which brain is in control of which situations is what forges our personalities and determines our character." (- Internet)

So if our tasks have to be accomplished successfully, it is recommended to use left leg first. And that is the very reason why soldiers march saying “LEFT RIGHT LEFT”

For passing an object from one person to another, RIGHT hand has to be used. But for donating objects, both the hands have to be used! These two statements can also be explained scientifically and is behind my scope of reasoning.

- ∫.∫rikrishnan