I catch myself asking questions like this, but then I remember how much tech from before my lifetime I can identify. Carriages, crank-started automobiles, bipla

I catch myself asking questions like this, but then I remember how much tech from before my lifetime I can identify. Carriages, crank-started automobiles, biplanes, muskets, fire-starting bows, spinning wheels, washboards, etc. How do I know what it looks like to press a wax seal with a ring? Or send a message with a telegraph, or climb the rigging of a square-rigged ship? I know there are people who carefully avoid any media that isn't obviously by and about the present moment, and they'll continue to be clueless about the past like they always have been, but there will also be plenty of people who can identify a CRT into the 22nd century.