It is sometimes possible to identify rational thought among the Slows, but their emotional exaggeration dilutes it.

NEWYORKER: The Slows

Although widely embraced by conservatives, critics said it failed to account for the sometimes less-than-rational aspects of human behavior.

WSJ: Obama's Regulatory Czar Likely to Set a New Tone

This careful, sometimes precarious, balance between rational and emotional can easily go off kilter when the brain locks into the evolutionary imperative that is sex.

FORBES: Four Questions (and Answers) about the General Petraeus Scandal

Neuroeconomics seeks to replace the abstract, hyper-rational creatures that populate traditional economics with real--sometimes irrational--people.

FORBES: Magazine Article

Mr Obama is sometimes compared to Star Trek's emotionless and hyper-rational protagonist Mr Spock, and I can imagine him, hand gripped to the head of an alien humanoid of a startling orange hue.

BBC: Republicans resist Obama's Jedi mind meld