Principle Stash

Meme

Norman Rockwell's painting Freedom of Speech: a man in a worn jacket stands up at a town meeting while the seated men around him look up. His face is covered by the Rockwell International logo; three of the seated men have IBM logos over their faces. The caption above him reads “You’re all wrong.”

Dissimilar Redundancy

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Painted by Norman Rockwell. The backup was written by Rockwell International. Different Rockwells.

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Appears in Reliable Machines From Unreliable Parts

Transcript

“You’re all wrong.”

A man with the Rockwell International logo for a face stands up at a town meeting. The men looking up at him have IBM logos for faces.

Norman Rockwell’s Freedom of Speech (1943), recast as the Space Shuttle’s flight computers: the four primary ones ran IBM’s software, and the fifth, the backup, ran software written by Rockwell International, in case all four were wrong together.