I have made a point to dip into to the dizzying array of TED lectures offered at TED.com from time to time and I’m always challenged and stimulated in my thinking; rarely do I find myself agreeing with all the assumptions of the speaker, but true to their motto, they do call to the plate discussions and dialogues that are worth having.
The latest example of this, David Deutsch’s lecture on A New Way to Explain Explanation, was no exception, both in terms of how I appreciated the push back and stimulus to my thinking, and in terms of how I disagreed with his assumptions.
Below are several observations and challenges to Deutsch’s argument. To make sense of what I write below, listen to what Deutsch has to say here.
Otherwise, you can read a partial transcript in the appendix of this essay to hear Deutsch in his own words.
At the heart of what Deutsch attempts to do (and this is only a mediocre attempt to summarize his twenty minute presentation) is explain why we have become so good at explaining the world since the scientific revolution.
His answer? It is not just because our science has gotten better. Nor is it simply because we’ve rejected our myth-makers (priests, ancient texts, etc.) It is because we have learned that the hard-to-vary assertion is the one which best explains reality.
First of all, it is the height of arrogance to assume that our knowledge today is so vastly superior to the knowledge of yesteryear, esp. that knowledge which precedes the scientific revolution.
Deutsch states: “Discoveries like fire happened so rarely that from an individual’s point of view, the world never improved, nothing new was learned. “
But let us take a more reasonable approach. Consider the following three areas of concern:
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