This is a side effect of using the same category terms, but not talking about the underlying distributions.
Eg., in the UK, 80% of the country were industrial working class or poorer until 1980s; and middle class only started at top 5%.
Today, the "industrial working class" level of wealth, is the bottom 20% at the very most.
So if you hold the class terms fixed, "middle class" it seems the 80s top 5% has "stagnated", only to fail to mention, it now 60% of the country.
If you hold the distributions constant, the wealth level acheived in the top 5% in 1980s is now a majority of the population.
This is a side effect of using the same category terms, but not talking about the underlying distributions.
Eg., in the UK, 80% of the country were industrial working class or poorer until 1980s; and middle class only started at top 5%.
Today, the "industrial working class" level of wealth, is the bottom 20% at the very most.
So if you hold the class terms fixed, "middle class" it seems the 80s top 5% has "stagnated", only to fail to mention, it now 60% of the country.
If you hold the distributions constant, the wealth level acheived in the top 5% in 1980s is now a majority of the population.