Why a knife can cut anything but our finger can't?

Hi guys ... how you all?  Today I share with you a new thing...

Do u think anytime that why a keen knife cut anything but our finger don't cut that?
Let's explain the answer.

By the physics formula,  we know that,
               

                  Pressure =force/area

So,  if area is smaller, pressure is bigger. And area is bigger pressure is smaller.

The area of the keen nife is so smaller.  For that when we give pressure on knife,  that works on a smallest point of the object and pressure value is so high. For that we can cut anything by a knife.

On the other hand, the area of our finger is bigger than a keen knife. Sothat,  when we give pressure by the finger on the object, it works on some area of the object and that is so bigger and the pressure is lower. For that we can't cut anything by our finger.