It seems wiser than being ignorant to the fact that, at the margin, we all have faith in something. We simply don't know everything.
That's why Nassim Taleb's Black Swan logic is so important to me.
It's practical you see.
When it comes to human health and fitness, whether energy intake or expenditure decisions, several philosophical problems concern me deeply (let's focus on nutrition here):
1. What to do (or not do) in the face of nutritional opacity. That is, what is the best modus operandi when we admit that we don't know everything about human diet and health (uncertainty and epistemic humility).
2. What to do (or not do) to account for biochemical individuality (the Hume/Popper/et al. problem of induction).
3. What to do (or not do) to respect the complex nonlinear mathematics that drive thriving, non-diseased physiologies (Mandelbot/Pareto/et al. multifractals).
To start, I respect individuality immensely; telling folks to eat this or that based on averages is like dumping dirty storm water on a blossoming Tulip in the middle of May.
Instead, in order to turn lack of knowledge into practical heuristics for use while living out each day, I turn to an aphorism-churning engine: meta-rules.
Meta-rules are rules for making rules. That is, they provide 'choice architecture' for epistemocrats. This lets the bricoleur in each of us shine through to clear (some of) the smoke away from nutritional opacity via avoidance behavior. When we engage in our own processes to deduce for ourselves 'rules to eat by' or 'rules to move by', that seems more sustainable, motivational, and insightful (plus robust to negative Black Swans) to me.
A 'meta-rule to eat by': Don't eat anything that causes a negative physiological reaction (such as excess mucous production).
A 'rule to eat by' that I deduced from this as a Patient of One: Don't eat grains--they cause negative physiological reactions (migraines) for me.
A 'meta-rule to move by': Don't expend energy in a way that causes chronic soreness (such as shin splints).
A 'rule to move by' that I deduced from this as a Patient of One: Don't jog long distances wearing clunky running shoes (instead, move in a power-law manner wearing Vibrams).
But why meta-rule making?
Simple: Because I have yet to find an epidemiological study that contained me as a subject.
That matters to me.
It should matter to you.
Because as Dave Lull likes to say, "the only experiment that really matters in the end is your self-experiment, that is, your individual attempt to refute a conjecture or falsify a hypothesis involving your own body."
And Dave reminds us of what this n=1 clinical trial deductivist decision-making bricolage lifestyle approach is all about in the first place: "Remember the foundation of our nutritional self-experimental faith, our basic conjecture that has yet to be refuted: 'Every individual organism that has a distinctive genetic background has distinctive nutritional needs which must be met for optimal wellbeing.' In these nutritional experiments or epidemiological studies, isn't there always so obviously individual variations in response to whatever nutritional items are being consumed? Is there ever the same effect, to the same degree, in 100 per cent of the people being studied? Don't we use these studies only to help us come up with conjectures to attempt to refute? We don't look to their results as proof of anything, do we?"
Since we cannot ever prove anything in science, we do want to be logical and strategic, as best as possible, about deciding which conjectures to test on our own bodies. I am not about to poison myself, so I search diligently for threads that make the most sense to me.
And the fact that evolution has blown up weak metabolic systems in the past makes me think that starting with leads based on what has survived the course of human history just might be the safest way to get my feet wet for tinkering. That's why I default to ancestry; it seems most logical to me. Those are my biological roots after all. But that's just me. We have to start somewhere. I start there.
But I am well aware of the survivorship bias (chance and randomness influence evolution too), and thus I remind myself that both science and literature (and everything in-between) provide me with mythologies that I must assess for myself. So, if I observe in the world that many other people have falsified a particular health conjecture--such as high-fructose corn syrup (HFCS) consumption--then I take that grace nudge seriously and reason that our shared evolutionary ancestries probably make that falsification event enough reason to avoid that activity entirely. I don't need to test HFCS again on my own body--I don't want to eat something that is one chemical step away from plastic and then watch my body produce alien tissues as a result (our metabolisms simply can't handle that stuff).
And that's why Black Swan logic matters to me.
Because I want to know how to act when I admit that I don't know much of anything.
But, if I had to guess, I'd jest that people like watching figure skating in the Olympics because the skaters move about the ice according to Levy-flights; that is, they move fractally--they move nonlinearly.
We like fractal aesthetics; that's why we love music (see all my recent Twitter posts for Music Rx, thanks to Dave Lull): it paces our physiologies in healthy ways.
To good health,
Brent
