How darwinian is population thinking? (applied to culture)

I am reading Tim Lewens’ new book Cultural Evolution (I am still halfway through it, so perhaps other posts will follow). One aspect I found interesting – and I imagine this will not come as a surprise to readers of this blog – is a peculiar conception of what identifies an approach to culture as “evolutionary”.

Lewens attacks the problem from a familiar perspective (see, for example, here), defining a taxonomy of possible evolutionary commitments for cultural explanations. As usual, some of them are too broad (Lewens calls them “historical” approaches), while others are too restrictive (he is skeptical of replication-based accounts of cultural evolution): things are more interesting in the middle.

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