‘Ne supra crepidiam judicaret,” meaning, ‘Let him not criticize above the sandal.’ Apelles
Ultracrepidarianism is the giving of opinions and advice on matters outside of one's knowledge.
A real danger in aging.
Closely followed by the Dunning-Kruger effect.
The Dunning–Kruger effect is a cognitive bias in which people with low ability at a task overestimate their ability. It is related to the cognitive bias of illusory superiority and comes from people's inability to recognize their lack of ability. Without the self-awareness of metacognition, people cannot objectively evaluate their level of competence. From Wikipedia
Given the above, what can one be sure about? Not much. On the other hand, quite a bit we remember the shoemaker folly.
I know how to:
What's on your "I know how to" list?
David Story: Professional pianist, drummer, composer, and educator. Well into his 5th enthusiastic musical decade, David works with adults pursuing musical dreams in the autumn of life, while he maintains an active presence in the Toronto arts scene.