If there is no friction, we can't lift anything. We can pick up things by friction, which comes from the collision of the object itself and the fingerprints on our hands. Without friction, objects and hands are smooth, and of course we can't get anything.

If there is no friction, if you want to write but can't afford a pen, the pen can't rub the paper; You can't take chopsticks if you want to eat. Holding chopsticks depends on the friction between hands and chopsticks. Without friction, you can't hold chopsticks stably. Similarly, chopsticks can't hold the food stably, your teeth can't bite the food, and people can't eat it.

If there is no friction, you can't lift the cup if you want to drink water; Want to wear clothes but can't afford to wear them; I want to work, I want to work, but any T-tool has slipped out of my hand again and again: not only that, but even a series of forces such as screwing the bottle cap and handle can't be carried out ... In this case, life is full of difficulties, and that person will be so uneasy and helpless.

Without friction, we can't act. Because there is no friction between the feet and the ground, the road without friction is smoother than ice, and people will slip when walking, and they will not stand after slipping.

To stand, we must stand on the ground with our hands or other parts of our bodies through friction. We can't stand still or walk on the ice. It's almost impossible to move I think because the ice is slippery, people will sweat when they walk not far. At that time, people would feel better only if they landed.

If there is no friction, how can bicycles, cars, trains and planes ... start? I think the car should have slipped before it started, or it couldn't stop after it started, because there was no force to hinder its movement, so it could only slide down indefinitely, and finally it collided with other cars, leading to traffic accidents one after another.