Diffusion is when particles move to make the concentration of a substance consistent. Osmosis is a type of diffusion where a solvent moves from a solution of high concentration to a solution of lower concentration, which equalizes the concentrations of the solutions. Garfield cannot learn through osmosis because he is not in solution. Garfield is learning through diffusion because the information in the books is moving into his brain until the information in the books is equal to the information in his brain.