As a little dude, hanging about my Dad's data processing facility, I remember his visits with Mr. Cray. I didn't know to be impressed then... When asked about Seymour and Parity, he was skeptical and responded:

Seymour Cray has a lot of interesting quotes attributed to him. I seriously doubt this story. Parity bits and error correction had been around a long time before he came on the scene with super-computing. Early machines that did not use parity bits and error correction was based upon being cheap - not fast.

An interesting story. Cray was told that Apple Computer had just bought a Cray computer to help them design their new Mac computers - he responded that was interesting, he had just bought a new Mac to help him design the next Cray computer.

True? Amusing, regardless!