Though unfamiliar with the theorem of Bayes,
Everyone knows to use it pays.
The common man and the statistician
Make good use of their intuition.
History tells of at least one creature
Who had the theorem as a built-in feature.

Recall the ancient Brontosaur,
Famed in prehistoric lore
Not only for his width and length,
But for his intellectual strength.
You will observe by his remains
The creature had two sets of brains:
One in his head, the usual place,
The other at his spinal base.
Thus he could reason a priori
As well as a posteriori.
No problem bothered him a bit,
He made both head and tail of it.
If something slipped his forward mind
T'was rescued by the one behind.
And if in error he was caught,
He had a saving afterthought.

One more point needs to be told:
The thing's been extinct since days of old.

Gene Laska
State of New York
Department of Mental Hygiene
Rockland State Hospital