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

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

Be able to read blueprints, diagrams, floorplans, and other diagrams used in the construction process.

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

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

Be able to tell whether garments that look good on the hanger actually look good on you.