thinking about how capitalism results in people trying to reinvent existing things to beak into a market that's long past any possible innovation and trying to think of things that have proven immune to that
can't think of anyone trying to do it to hammers, but that's about it. i briefly thought bookmarks before remembering those bookmarks that mark what line you were on and stuff or the ones with timers in them
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I guess basic furniture too. tables and chairs and stuff, there's variety in, but it's almost all artistic variety rather than "making a better table/chair"
@Felthry That's complicated by the way that good ergonomics varies by individual, so a table/chair/combination thereof which is perfect for one person's daily use will give another an RSI in short order.