Old Mathematicians

OLD MATHEMATICIANS never die, they just go off on a tangent

Economics vs. Astrology

An econometrician and an astrologer are arguing about their subjects. The astrologer says, "Astrology is more scientific. My predictions come out right half the time. Yours can't even reach that proportion".
The econometrician replies, "That's because of external shocks. Stars don't have those!"

Dollars Equals Cents

Theorem: 1$ = 1c. Proof: And another that gives you a sense of money disappearing. 1$ = 100c= (10c)^2= (0.1$)^2= 0.01$= 1c.
Here $ means dollars and c means cents. This one is scary in that I have seen PhD's in math who were unable to see what was wrong with this one. Actually I am crossposting this to sci.physics because I think that the latter makes a very nice introduction to the importance of keeping track of your dimensions.