I'd rather like to build that robot.

If you have not seen it yet, check out Ballbot. This video is it responding to a disturbance. I know nothing of its programming, but it acts as if it is using the same control systems you are describing.

Also, Beyond AI has a lot of discussion about how simple control structures may eventually work its way into building a general AI. I do not know if there is an online version hanging around, but if you are interested I can type up a summary article after the General AI topic ban is lifted.

In terms of your original post, another random example of simple control structures providing control over extremely complex systems would be video games. The controllers generally affect one thing and after my mind understands the movements I can guide a little soldier to kill other soldiers. I find that learning these control systems makes me a better driver, makes me better at operating small backhoes, or anything else that can be expressed in terms of simple control structures. An interesting side-topic to your article would be taking a look at how we control control structures and working to improve the feedback and response times. My talent for video games may be related to my intuitive ability to balance when walking on the curb or why I instinctively want to respond to a emotional tragedy by responding with a soft push toward emotional safety. "Fixing it all at once" is likely to overcorrect.

I am rambling now, but this article connected a few unassociated behaviors in my head. Cool.