Thought of the Day - Limitations and Local Optima In Life

The strength of the human race is that we have adapted to survive, but now that survival is not really an issue for a lot of people, should we be questioning whether the adaptations are really the optimum?

The reason i bring this up is that i read an article on the benefits of 'barefoot' walking (see link at bottom), which blamed the 'features' of current shoes for various foot, ankle, leg and back issues. You can understand that in the past having a covering on your foot would be beneficial; less cuts, less chance of infection and a bit of protection. It then became even more critical as we moved to colder climates and didn't want our feet to freeze and fall off. Shoes allowed us to cope with conditions.

Of course it then became important that the sole of the shoe was durable and strong to prevent puncturing, which meant that stiffer, thicker materials had to be used. To make these stiff, thick soles more comfortable we added arch support, padding in the heel and rockered the sole to try to make the gait more natural but all we were doing was accommodating a limitation. Related to my notes on Beyond the Goal [coming soon] it seems that these local optima rules (padding, shaping etc) to accommodate the limitation were made so long ago that people no longer notice the rules or the limitation. With new advanced materials, a puncture-proof durable sole can be much thinner and more flexible, so why aren't they? One simple reason; people are used to what we have at the moment. Most people associate soft foam soles and thick padding with comfort, heightened heels are ubiquitous and hey if they are good enough for Olympic athletes they must be good enough for us, right?

Wrong. There is growing research which indicates that rather than making our feet more comfortable and protecting our joints from damage, that most current shoes actually cause these problems. So what is the solution? As with all good ideas it is very simple; use the millions of years of evolution in the human foot and interfere with it as little as possible. Provide protection without hindering the natural movement of the foot.


Recently i have had similar thoughts about a vegan/raw diet. That humans added cooked foods, dairy and meat so that we could overcome the limitation of seasonal fruits and vegetables. The only way to survive was to get calories any way we could and we adapted. But that adaptation is relatively recent and given that in the modern age we can get fresh fruit and vegetables year round is that adaptation the best decision or is it based on a local optima rule that helped us to survive in the past.


I am no Luddite, i love technology but i think we need to question the rules and assumptions of society to ensure that our choices are the optimum based on the current situation.


Idea from: http://nymag.com/health/features/46213/