The great sage Thales once put the general matter succinctly "Oh master," he was asked, "what is the most difficult thing to do?" "To know thyself", he replied. "And the easiest?" "To give advice to others.
Revolutionary moments often seem to occur in history when large numbers of individuals have a change in consciousness, regarding themselves and their status
A very disturbing feature of overconfidence is that it often appears to be poorly associated with knowledge - that is, the more ignorant the individual, the more confident he or she might be.
However much we champion freedom of thought, we actually spend much of our time censoring input. We seek out publications that mirror or support our prior views and largely avoid those that don't.