Molecules are tiny masses. We explain the world by means of models that are filtered by our own perceptions to help us understand something that cannot be touched. The concept of molecules and fundamental particles has changed over time, can we ever come to understand the world we perceive with clarity?

Pebbles on a beach are fashioned and smoothed by mechanical natural forces. Here the masses clearly have been fashioned by some "intelligent" design like the tiny shells of animalcules under the microscope. Am I the product of mechanical forces?