"I think that anyone who has the ability to do junior high-school level math or above knows exactly what I’m talking about"
An image is worth a thousand words:
Or check Glenn Stehle's 2 comments and don't forget the non-answer!
For more PoMo PoKe fun (poor Kalecki!), check "Playing Profit with the Stock Market".
But, seriously, what's with Marx's critics? Are they deliberately chosen according to a profile and a job-description, or are they self-selected?