At the "Sources of Information Content in DNA" conference in 1988, he said that his intelligent cause view was compatible with both metaphysical naturalism and supernaturalism.
Pada konferensi Sources of Information Content in DNA tahun 1988, ia mengatakan bahwa pandangan penyebab intelijennya sesuai dengan naturalisme metafisik dan supranaturalisme, istilah intelligent design ("perancangan cerdas") pun muncul.