Years ago, Johnny & I went over to the KMart near us to buy a coffeemaker. Maybe it was when we turned off the gas so our little espresso pot no longer was of any use. All the electric coffeemakers cost maybe $25. But one came with a free package of 100 paper filters. THAT was the one we had to have. We didn't consider anything else, not price, reputation, warranty... we wanted those free filters. A hundred pots later, we discovered that filters cost a dollar.
Not sure why that anecdote came to me this morning but it makes me realize that probably all of us have strange lacunae of ignorance. Why would we all know how everything works? I understand banks, having had an accountant for a father but it doesn't surprise me that people get scammed into opening accounts. For example. When I once had to go to some welfare-type city department, I discovered — because I did it wrong first — that I knew less than everyone else there on how to behave in order to get what I wanted.
Still not sure where I'm going with this, except to say I like when I rub up against my own obliviousness. (Except when a young person patronizes me. For that matter, why does everyone, young or not, like to tell everyone else how to unmute on zoom?)