Radical constructivism, thus, is radical because it breaks with convention and develops a theory of knowledge in which knowledge does not reflect an 'objective' ontological reality.

You cannot not communicate. Every behavior is a kind of communication. Because behavior does not have a counterpart (there is no anti-behavior), it is not possible not to communicate.

Our everyday, traditional ideas of reality are delusions which we spend substantial parts of our daily lives shoring up, even at the considerable risk of trying to force facts to fit our definition of reality instead of vice versa.

Maturity is doing what you think is best, even when your mother thinks it's a good idea.

You cannot not communicate.

A self-fulfilling prophecy is an assumption or prediction that, purely as a result of having been made, cause the expected or predicted event to occur and thus confirms its own 'accuracy.'

For an answer which cannot be expressed the question too cannot be expressed. The riddle does not exist.