I know that the inflation calculator is based on data but is the $500 we spent on a Pioneer receiver in 1975 really equivalent to $3,200 today?
Depends. Cash wise, yes, pretty much near equivalent. Goods wise, well the cost of manufactured goods has trended down for some time, with offshoring having a fair bit to do with it. But other services, provided by humans, have trended up, so it explains why you get less for the same money, even though some big ticket items appear to fall in price, relatively.
Where did we come up with money like that?
More than a century, probably close to 4 if my memory serves, of some extensive mathematical modelling of observed data.
If we made $5 an hour (1975 average wage) back then it would have taken 100 hours to buy it.
At the same 100 hours today, you would have to make $32 an hour. Apparently, $33.50 is the average wage in 2026.
Minimum wage in US seems to have stagnated, but in other countries there is CPI indexing, so it moves along with the trend. Prices rise 4%, minimum wage rises 4%. Rudimentry, but works for the most part to avoid large or growing discrepancies.
Both wages are gross, not net. So, it would actually take more work hours to purchase it than my example.
Yes, welcome to post-tax income calculations.
I can't begin to grasp it.
A dollar bill still seems like real money to me but apparently, it isn't.
People saying "money isn't real" is the financial equivalent of "I was travelling in my conveyance". Ignore them.
If anyone says they understand the cause of inflation, they dont. There are competing models and explanations, but none survive rigorous analysis, review and challenge in ALL circumstances.. They could ALL be right at the same time, for whatever reason, and we just dont really "know" a causality that works all the time, every time.
What we CAN do, is model it well enough for practical purposes, observe it in the real world, and use the numbers for practical purposes with a high degree of confidence in the result. Again and again.