If the tail didn't degenerate, would humans look like monkeys? At that time, the tail should be useless, so it was abandoned in the process of evolution. If there is a tail now, there may be a tail control besides foot control and hand control, and then there will be a tail department in the hospital.

Primates have tails. Most of them lived in trees at first. Their tails can be used to balance or even scratch branches. The role of the tail is very important. But millions of years ago, apes had no tail, which was considered as "tail degeneration", so human beings were constantly evolving.

If we grow into a long tail, the picture will be quite happy. People walking in the street, regardless of sex, age, beauty, ugliness and fat, wag their tails. Then we should consider the tail in our daily necessities. For example, we should dig a groove or hole in the seat of a car to leave some room for the tail.

Tail is so fashionable that it may replace hair as one of the criteria for judging human appearance. The shape, strength and color of the tail will determine people's health and appearance orientation. Modern people should take good care of that little hair on their heads. Once they have this big furry tail, the most popular tail care shop on the street. The original washing, cutting, blowing, dyeing and straightening can be continued on the tail.

However, we should also consider where to put the tail. When we lie down to sleep, the human coccyx just touches the bed board. The monkey's tail is mainly to control the balance when living in a tree. The human body can control its balance with its limbs, so it is unnecessary.