When the 70s arrived, the old fortune-telling machines of yesteryear seemed a little quaint and outdated. Realizing that good ol' Zoltan wasn't earning a fair share of quarters any more, it was time to pull out the big guns and display the amazing technological leaps that had occurred in the fortune prediction industry. It was time to unveil the Biorhythm machine.

While one might not place their trust in a kindly old fortune teller, it was pretty darn hard to argue with cold, hard, scientific fact. And that is what the Biorhythm machine offered – an impressive looking piece of equipment that looked like it belonged in a laboratory somewhere. A mere quarter and some inputted birth date information was all this baby needed to spit out a fancy graph, like those fancy scientists use, to guide the user in their decisions for the day.

As it was explained, there are three natural cycles that have a profound impact on one’s life, the emotional, the physical and the intellectual. When we come into this world, each cycle starts at zero and fluctuates over the course of our lifetimes. By being able to see this information in real time, one is able to make informed decisions on how to proceed with the rest of their day. A spike in the physical might be a good day for a game of one-on-one, for example. Read the chart correctly and one could achieve greatness, while avoiding pitfalls. All that for the price of a quarter.

Of course, since a chart was only good for a given day, it was going to take 365 quarters a year to really plot out an effective road map for one’s life. But that was a small price to pay for inner peace and more than a few arcade regulars read their biorhythm charts as frequently as the daily horoscope. And for the makers of the Biorhythm machine, this translated into a very lucrative arcade endeavor. It may have put a lot of fortune telllers out of business but it was all in the name of science.