There are many videos or similar that explain something interesting and cool about some technique, procedure or invention used hundreds or even thousands of years ago that's very ingenious and achieves things that the average person usually didn't know was even possible back then. While it thankfully doesn't happen often, it irks me a bit when the narrator (or text) makes a point about how that thing was achieved "before computers" or "before modern machinery", or "before modern refrigeration systems" or, in general, before modern technology. I find it irking because of how patronizing it sounds. As if the author thought that the viewers are so stupid and so ignorant that they need to be explained that hey, computers didn't exist a hundred years ago, or that modern power tools and construction equipment didn't exist a thousand years ago, or whatever. As if we didn't know that already. I think even the most clueless, stupidest, least...