I found the whole article fascinating, but this part in particular grabbed my attention:

Macrae and Curran’s arcade route – a series of machines they owned and operated both for their own profit and for the benefit of students – quickly expanded to three dorms, but they soon had trouble with declining revenues as people began to master the games. As arcade operators themselves, they had a direct financial stake in making the games more interesting. So they did what any clever MIT student would do in that situation: confront the problem with mathematical precision.

And:

At this point in the video game world there were these kits called speed-up kits or enhancement kits that were being sold directly to arcade owners. The first really successful one was for Asteroids because people learned how to beat Asteroids, and they could play forever on a quarter. So somebody game up with a little circuit that you could clip on, and wow, it made the game much more difficult.

I had no idea that was a thing. Amazing little nugget of video arcade history.