"Jim Macklin" wrote in message
news:wHPYg.4992$XX2.155@dukeread04...
Never try to teach a pig algebra, it annoys the pig and
wastes your time.


A very old flight instructor, and good friend of mine, used to say:
"Never try to teach a pig to sing, it wastes your time and annoys the Pig."
Not too long ago I saw a sig on one of these groups:"Teaching Pigs to sing
since 1976". I almost hurt myself laughing.

Al G