> These commenters are speaking authoritatively on subjects about which they are completely ignorant, but they are strident in doing so because they are repeating what everybody knows. They are intellectually secure in the center of a vast mob; their wisdom was received, not crafted.
This is an important takeaway for me, maybe even more than “electirc devices are washable”.
World is filled with conventional wisdom that limits us in countless directions. Knowing how things work empower us to break these “rules”.