George Nelson recalled about the design of the “Ball Clock”:

“And there was one night when the ball clock got developed, which was one of the really funny evenings. Noguchi came by, and Bucky Fuller came by. I’d been seeing a lot of Bucky those days, and here was Irving and here was I, and Noguchi, who can’t keep his hands off anything, you know- it is a marvelous, itchy thing he’s got- he saw we were working on clocks and he started making doodles. Then Bucky sort of brushed Isamu aside. He said, “This is a good way to do a clock,” and he made some utterly absurd thing. Everybody was taking a crack at this,…pushing each other aside and making scribbles.
At some point we left- we were suddenly all tired, and we’d had a little bit too much to drink- and the next morning I came back, and here was this roll (of drafting paper), and Irving and I looked at it, and somewhere in this roll there was a ball clock. I don’t know to this day who cooked it up. I know it wasn’t me. It might have been Irving, but he didn’t think so…(we) both guessed that Isamu had probably done it because (he) has a genius for doing two stupid things and making something extraordinary…out of the combination….(or) it could have been an additive thing, but, anyway, we never knew.”
(George Nelson: The Design of Modern Design; pp111)
