I don’t like to post other people’s original thoughts in their entirety, I would rather you visit their site. So, here are some excerpts from Bruce Charlton’ s Miscellany:
I am now pretty much convinced that average and peak general intelligence (g) has been declining in the West for at least the past 200 years – and the rate of decline is at least half a standard deviation (circa 8 IQ points) per fifty years.
What this means is that we are living in an over-promoted society.
We have inherited social structures from earlier generations, with social roles dependent upon certain minimal cognitive capacities – but we lack sufficient people with the requisite cognitive capacity to fill these social functions, therefore although people can do their jobs and functions, they do not and cannot understand these functions.
Therefore when anything goes wrong or when any change is required, people will necessarily wreck what they have inherited.
Modern people are the same with their cultural inheritance. Not just technology but religion, science, the education system, politics, administration and management, literature, music, fine arts… you name it, we have wrecked it.
We wreck it because the majority of people who do these things cannot understand them; therefore necessarily cannot maintain, repair or replace them.
Read the rest here.