The (QWERTY) Keyboard

  The character arrangement on the keyboard was arranged by Christophr Latham Sholes. This type of keyboard, that we are using, is call the QWERTY keyboard. The reason of putting the character like this was to avoid mechanical problem while typing to fast, I am talking about those  typewriter in the 1868, the pole would actually got stuck. So this guy, C.L. Sholes, came up with a solution which separate the recent use character to the right and the left side. But the fact is most people found that the arrangement of this QWERTY keyboard is very inefficient. As most people use to work with right hand. but in the QWERTY keyboard, left hand respond to 57% of typing work. Also the pinkie and ring finger are weak finger which we still need to use a lot in the keyboard.

Rubik's cube

   Rubik's cube was once being popular in 80's. In just two year, it had sold over 200 million Rubik's cube. Rubik's cube was invented in 1974 by the Hungarian sculptor and architecture Ernő Rubik. But what made it still so popular as it is difficult to solve by pure logic. So Patrick Bossert, a twelve-year old boy from England wrote a book call "You Can Do the Cube "(ISBN 0-14-031483-0). The book sold over 1.5 million copies worldwide in seventeen edition. Just then Rubik's cube became even more popular in the world.

  Most people has a misunderstanding in solving the Rubik's cube. They think that a cube should solve face by face, actually it should be solved layer by layer.