Jim Cramer says that the recent economic numbers taught him that everything Harvard taught him about economics was wrong. Harvard taught him in the 70s that you cannot have job growth with mild inflation, and that rapid job growth would fan the flames of inflation. That has been disproved by today’s economy of higher tariffs on imports. Economists gave us repeated dire warnings that tariffs were bad for our economy, but that has been disproved as well. China is the one that is hurting.