The weaver spins thread from cotton. The threads are intertwined with each other to form a rope. The rope is wound on the hand and the whole wound-up rope is further twisted. This would create a bulge before every twist. Similarly bunches of nerves will form the brain stuff in each and every brain in different weights according to the hereditary. 
Each and every tender nerve bunch thread’s weight has got to do with the small and big shape of the brain lobe. Varied numbers in the nerve bunch gives more power and less power to the human twisted lobes. The working power and the secrecy of the thinking power is embedded in the lobe.

What is lobe?
The lobe is somewhat round and fattish in shape. Each fattish lobe is a projecting part in the brain which is a twisted nerve, that looks like a potato. There are three or more lobes in one roundish lobe. The number of lobes in one lobe causes the fattish shape. The cause of the projection and the stuff’s hardness is its automatic twisted function at the time of our growth in our mother’s womb.
The thread’s coiling nature and the several rounding is mainly producing the power. Imagine the motor coiling for producing electricity at the time of rotation. It is an example.