Dominic Cummings, a senior adviser to the UK Secretary of State for Education, recently provoked a flurry of complaints by allegedly claiming that "a child's performance has more to do with genetic makeup than the standard of his or her education." In response, he insisted that he had "warned of the dangers of public debates being confused by misunderstanding of such technical terms." Whatever you may think of that defense, it's worth looking a little more closely, because Cummings' technocratic, effectively eugenic, definitely gene-focused approach is dangerously close to affecting public policy.

Cummings has been called "arguably the most brilliant" special adviser in the UK government, but he also seems to be viewed as something of a loose cannon who has been blamed for leaks and criticized for the use of "colourful" language. He was awarded a First in History at Oxford, and has a background in activism against the UK adopting the Euro, and then controversial stints in the Conservative Party apparatus.

As an education adviser, he wrote what is called, oddly, a "private thesis" for the...