There was a story many years ago about an employee of Cray going to an Apple presentation about using their new Cray supercomputer to design the next Macintoshes.
The Cray employee rang Seyomour Cray to tell him about it.
Seymour Cray replied 'That's funny as I am sitting here at my Mac using it to design the next Cray'
(Note the Typo in seymour - I left it in as it fits with the rest of the thread