In fact, left-handed people are inherited from their ancestors, and left-handed people are generally smarter than right-handed people. There are scientific arguments for this. For example, Einstein, Newton, Edison and others are all left-handed. The memory of the right brain is better than that of the left brain 1 10,000 times! You can record a lot of information, which is also the reason why modern people advocate developing the right brain. Using the left hand is helpful for the right brain.