A bug becoming a feature (1972 edition)

I could have fixed it, but it turned out to be important, because if you get two good players they could just volley and play the game forever. And the game has to end in about three or four minutes otherwise it's a failure as a game. So that gap at the top, again – a feature. So that was sort of a happy accident.

"Happy" primarily in the context of the industry – the goal of an arcade game was, after all, to bring in quarters, and this here was the unexpected equivalent of the zero in a casino roulette game. But I wonder if some of this bugginess/randomness also helped the game feel challenging and surprising, even for skilled players.