I’m not surprised in the slightest Evelyn. My oven is quite inaccurate but disturbingly precise (1F). I collected a bunch of data from an oven thermometer (which I checked against an ice bath and boiling water as part of my attempt to interest nieces in science. A little curve-fitting and I developed quadratic equation for settings. My wife was not amused (digression: there is no science in New Jersey - I’m sure I’ve posted on that topic before). I built a little conversion table which has boiled down to “set 15F high below 300F and 20F high above 300F.” Close enough.
I try to think the best of people and the temperature scale conversion is silly but doesn’t point fingers at anyone directly. If you’re correct, and I fear you are, undue precision is probably a factor of people trying to show how smart they are. In the end they achieve the opposite.
