The concentration of oxygen in sea water (20 deg C) is essentially 9 ppm (9 parts out of a million). It appears the concentration of idiots in the general population is at least that high. Sadly, that is why we still get spam emails from Nigerian Princes trying to reclaim their enormous wealth. Send out a million emails and if 9 people respond they've won.
"Just when I think I've made it Idiot-Proof, God creates a better idiot."
"Just when I think I've made it Idiot-Proof, God creates a better idiot."