Are cats smart?

The cats love keyboards.I have to push them out of the way so I can type.Wish they would pick another spot for their naps.It is aggravating,I will be busy doing something and they will lay on the keyboard and zip bang pow I lose what I was doing.And I think they are deaf and blind cause they have a bad habit of laying in front of people and not moving.They just lay there like they don't care.I made my mind up I figured it out the problem is cats are just not very smart then again maybe they have me figured out.