Why is the fingertip gyro so hot?

Everyone has a habit of wanting to have something in his hand whenever he is free. When he was a doll, you could play with toys. When he is old, you will have a pen in your hand, and when he is old, you will change it into a walnut.

The emergence of fingertip gyroscopes is because some people have found that human beings have a habit that things in their hands will unconsciously want to make this thing move. For example, dolls are interested in cars, young people like to turn pens, and when they get old, they turn walnuts.

The fingertip gyro just meets these requirements and can rotate for a long time. It seems that I haven't played enough for one day, and then in this situation where everyone plays, the fingertip gyro will be on fire. A good fingertip gyro is unconventional. It can be said that the friction is very small and it can be turned for a long time when it is moved.

Humans feel that they can control this thing that can rotate in their hands, and have that special ability, which is more like narcissism. For example, the spiral pill rotates in their hands, and the fingertip gyro makes people think that it is a spiral pill that they have rubbed out.