"Happy Cliff Day" is a Web version of one of the many "greeting cards" we have made to illustrate certain  concepts of making knowledge useful and to introduce this Web site.

Some of the other cards:

What is rational?
The dichotomy "rational - irrational" is a gross oversimplification.

What is science?
and what isn't?

Why do science?
Money?  Fame?  Power?  Mystery?

Prove anything! (Glen Canyon)
The "selection error" (PAP) and dams.

Prove anything! (State lottery)
The "selection error" (PAP) and the gullible.

Winter's over - Be safe!
Identifying what's relevant and avoiding sunburn.

Damn the torpedoes!
The "selection error" and singlemindness.

December 9 (the darkest night of the year)
The "obvious" route to modern science.

Look Again
Things are not always what they seem.

Gullible's Travails ("newsletter")
Be an EX-gull!  How to assuredly get rich with the lottery. 

Unsuspected Dimensions ("newsletter")
Solutions to problems lie in unsuspected dimension.