Evolution has long been the target of illogical arguments that use presumption.

Be able to defend your arguments in a rational way. Otherwise, all you have is an opinion.

Be able to analyze statistics, which can be used to support or undercut almost any argument.

Understand why casinos and racetracks stay in business - the gambler always loses over the long term.

Capital punishment is the source of many an argument, both good and bad.

At first, I only laughed at myself. Then I noticed that life itself is amusing. I've been in a generally good mood ever since.