Beyond versus: the struggle to understand the interaction of nature and nurture

If everyone now agrees that human traits arise not from nature or nurture but from the interaction of nature and nurture, then why does the 'nature versus nurture' debate persist?

In 'Beyond Versus', James Tabery argues that the persistence stems from a century-long struggle to understand the interaction of nature and nurture - a struggle to define what the interaction of nature and nurture is, how it should be investigated, and what counts as evidence for it.