the interaction of atoms which keeps us in our seats is due to electromagnetic repulsion . Although EM repulsion does play a role , it is not the main contributor . Frank Heile from Stanford University has written a good explanation of this phenomenon i t t h e P a u l i e x c l u s i o n p r i n c i p l e o r e l e c t r o s t a t i c f o r c e s t h a t e x p l a i n w h y Idonotfallthroughthefloor . His conclusion isIn our universe the Pauli exclusion principle always results in a repulsive force and sometimes there will also be an electrostatic repulsion that prevents your foot from falling through the floor . So the Pauli exclusion principle is the most important reason why you do not fall through the floor . <| sep |> because ska plays like a scared puppy at the back of bombsites and bolts to save his awp as soon as his teammates die .