Theorists like to use pictures to describe how learning works. “Not filling a bucket but lighting a flame.” Constructivists are gathering wins in the neuroscience, with their picture of learning as building connections between nodes of ideas.
Adding and connecting ideas? That sounds a lot like the learning I’ve mostly done! You too? Pretty cool stuff.
Today, though, I want to talk about a different picture of learning: Taking something away. The image in my mind is that of the gardener, trimming the dessicated away from the healthy. While it necessarily follows the adding and connecting processes, cutting away nodes is arguably more valuable. To me, the ability to effectively prune mistaken or non-useful concepts sets highly capable critical minds apart from those minds less mature.
What am I talking about? Trimming trees? No! It’s about cutting out mistaken beliefs, misshapen concepts, and false ideas.
When I learn, I begin with a set of assumptions. In some few situations, every bit of material is brand new to me; most of the time, I have some background knowledge. If I hear things that fit well with the background knowledge that I had, it is hard to tell what was there before and what was newly added (i.e. learned) from my participation!
However, if I had an idea that new evidence clearly contradicts, and I actually change my mind and how I see the world, THEN I know that I have surely learned. When my old idea is debunked and I see more clearly, I have more power to understand the world around me and predict what will happen.
Where do you find this sort of learning? Yes, you can watch Mythbusters or read popular science myths debunked or what have you. Those give you the instant thrill of changing your mind, if you had actually believed mistakenly and buy into the evidence presented. (Mythbusters is entertaining, sure, but hardly good science.)
In fact, you can learn this way all the time – with the right mindset. Developing a discerning eye means looking critically at your own beliefs. If you could state in sentences what you believe before going into a lecture or reading a chapter, and then explain what changed afterwards, then you are aware of what you learned. I have been trying to practice this, and have found myself frustrated by some classes that do not take anything away, particularly in the social sciences.
Teachers: if you do not find out what your students already know, you might not be adding any new knowledge or taking any misconceptions away.
I find that my mind is sharper when I know what I know and what I don’t, and I learn faster when I am focused on finding and correcting my misconceptions. I hope you can find some of your own false beliefs and learn too!