Random Thoughts from a Restless Mind

Some time ago I wrote about the Minimum Effective Dose (MED), the concept in which we seek to optimize our results with the smallest amount of whatever it is that we are using to achieve that outcome. The quest to find the MED is one that crosses quite easily between my day job (medical) and my own quest for health (CrossFit). A quick mention of Eva T in Outside magazine and the program she uses with her clients sounds a lot like MED. The Everyday Math column in the WSJ provided an enhanced vocabulary for the journey.

Sometimes the MED really is a “something” you take. Here one thinks of medicine or food, for example. More often is the case that we are looking at a dose of time or effort. Or perhaps both. In this case we are seeking to optimize the effort as it relates to the outcome, to make the value of outcome divided by effort as large as possible. The rate limiting factor here is the Law of Diminishing Returns, of course: at some point additional effort produces such a small incremental increase in the outcome that it becomes not worth making. This applies to everything from WODs/week (or day) to decorating a birthday cake. At a certain point you just have to feel you’ve succeeded.

How, then, to know when you have reached this optimal level? Eugenia Cheng, the mathematician who wrote the WSJ piece, offers the concept of the “minimal acceptable standard”. Once she has reached this outcome the additional effects garnered from more effort have moved beyond the point where Diminishing Returns kicks in and she simply accepts the outcome. We would call these “minimal standards” goals, but the concept is essentially the same. We want an outcome; setting a target or a goal is step one in optimization.

Cheng then goes on to refine optimization with a discussion about boundaries. One is your goal, of course. In real life others also exist, things like a 24 hour day and a 7 day week and the need to make a living. The dose you choose, both qualitatively (what it is) and quantitatively (how much you get) is unavoidably affected by boundary conditions over which you have less control.In the end no outcome worth getting happens without effort. Health, friendship, or the unraveling of a gnarly math problem–you’re going to put effort in to get your results out.

Maximizing your outcome-to-effort ratio is just another way to say you are seeking your Minimum Effective Dose, in CrossFit and elsewhere.