Earlier quoted context omitted.
I have two things in my possession that are wonders of engineering. One hair trimmer and one restaurant kitchen blender/kitchen multifunction machine. Both made in 1987 in East Germany. The blender I bought second hand, and it came with a box of original replacement parts and specifications so detailed that I believe I could probably replace the motor if it ever fails (almost 6hp! Take that, Vitamix!). It makes nut b…
is this not the very definition of survivorship bias though? I have things from the 80s that, obviously, have lasted a long time. But I have owned things from that era that have failed and been forgotten about. Incidentally I bought some boots this year that are expected to last (at a minimum) 10 years, and I suspect they would, but I can't know that until 10 years from now. Heirloom quality is probably still a thing…
Not necessarily; it's also sufficient to consider the overall distribution of blenders and hair trimmers from the 80s that are still working compared to the distribution of items sold, which means it's also fairly easy to spot because people use their kitchen/bathroom appliances frequently and notice when exceptionally old ones still work.