I was never gruntled in the first place.
Demonmariner
He doesn't just test them, he tests them exhaustively and (in shade tree fashion) scientifically.
Precise time came to humanity with the railroad. Until then no one cared very much about whether it was 11:35 PM or "around midnight" or "way past bedtime." Train timetables were the first thing that made minutes matter to the general public.
Mariners cared about time and preferred to be as precise as possible, but did pretty well telling local time by the stars. Finding longitude was a problem until good clocks came aling though.
We do, it's called Universal Coordinated Time. The time is now 00:37 UTC, or 16:37 Pacific Daylight Savings Time.
Rheostats are two wire devices, think of them as current controlling. Potentiometers are three wire devices, typically used as voltage dividers. They are not the same.
Worm food.
I'm just waiting for canned bread.