Americans didn't need to concern themselves with the architectural intricacies separating Gropius the polemicist from Mies the poet, let alone Le Corbusier the theoretician.

FORBES: On The Cover/Top Stories

But he was essentially a theoretician who wrote and lectured extensively.

ECONOMIST: May 1968

And for those cyberfans who view the computer as their favorite toy, there are real toys, like the 1966 Brainiac electric brain kit, designed by pioneering computer theoretician Edmund C.

FORBES: Cyber Treasures For Sale

In suggesting between the lines that Ruskin should be read not as a critic or theoretician but as a creative writer, a literary artist, Mr Hilton makes compelling sense of his idiosyncratic and eclectic oeuvre.

ECONOMIST: Art history

Developed largely from his study of the ancient Chinese theoretician Sun Tzu and Prussian military reformers of the 19th century, the theory explains how a combatant can defeat the enemy on the mental battlefield, before the real shooting starts.

FORBES: Shock And Awe--Your Competitors