This isn't really related to the dishwashers per se, and it is too early for me to be doing any sort of math, but if it's a 10% drop over 14 years (making it, if we for some reason assume it's a linear correlation, a 0.71% life expectancy drop per year), wouldn't that translate to a 60% drop over 65 years, where the 2017 LG would last for only two decades? Or are you assuming some other more true-to-life model of dishwasher lifetime degradation? Again, this isn't really about how good the actual appliances are, I am simply curious where the numbers came from because I can't seem to figure it out. [EDIT] Also, prices from the 1950s are a little fuzzy, but here is a reference to the first truly affordable home dishwasher, for $169.50 ($1,713.31 in 2017 dollars), and here is a 1959 $184.50 Kenmore dishwasher ($1,544.49 in 2017 dollars). When I look at the LG website, the two most popular models (judging by the sheer number of reviews) that they have cost $820 and $1120. So yes, it's cheaper, but not three times cheaper.
