Consider a human and a rabbit. It is difficult to think of a rabbit as either. As we move up the intelligence scale, to horses for example, we see very little change in the comparison. Yes, such animals may wear a mask of innocence, but they are the exception, I argue, not the rule. The difference might be intelligence, but I am unconvinced.
Retarded adults appear to have fewer masks, but masks they have.
It is twilight on the sixth day and creation is complete. They wear no masks. They have no need for masks. No thought of disguise or pretense inhabit their minds. Our race has not yet been bent.