#1908: Ambitextrous

It seems that typing on the right hand side of a qwerty keyboard has positive emotional associations.

Today’s invention is therefore a keyboard which has the keys arranged, not in qwerty formation, but using statistics -so that letters are arrayed by decreasing frequency of use, in say English, from left to right of the keyboard.

A more advanced version of this would examine the statistics of all the positive and negative words in a dictionary, placing the letters which dominate in the positive words towards the left of the keyboard and vice versa.