Full marks to Tveskov for knowing the answer to a previous question, and for the additional explanation.
I’ve heard a different legend of the origin of guru meditation: It is said that the developers were playing with a new input device which was a balancing board that you stood on, and by leaning over you could control for example a game. And one of the uses was to try and stand still on the board, as if you were meditating. Hence guru meditation.
But I like Bjarnes version better.