Why is the human race getting stupider overall?

Tweet

Test score worldwide continue to get lower and lower. All grade schools used to teach fractions in 4th grade; now they wait until 5th grade because the students "just can't handle fractions in 4th grade". All high schools used to include the Quadratic Formula in Algebra 1; now it's not seen until two years later! In the 19th century, a course in "algebra" included number theory, and was often taught in 8th grade. Now you're lucky to learn number theory at any level of education. Political elections have been reduced to popularity polls, with the winners not being the best person for the job but the person with the cutest TV image. We cower to accusations of being "socially insensitive" and allow morons with illogical agendas to reshape our language. Have we perhaps gotten so stupid that we are no longer even able to tell how stupid we've become? What do you think?