A man walks through loose snow with great difficulty, but if he puts on his skis, he can walk almost without failing. If you take a knitting needle and bring it to a sheet of paper, and then press it with some slight force, then it will not pierce it. And if the same action is performed with a needle for sewing, then a hole on a piece of paper will appear. These two experiments prove that the action of force depends on the area of the support on which it acts.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.