The skin on your finger tips are soft and sensitive

Fingertips are very sensitive to touch because they contain a high number of nerve endings. According to the Biology Encyclopedia, areas with more nerve endings are more sensitive to touch.

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on