If you read the paper itself, it&#x27;s basically empirical work describing the negative effects, followed by an essay claiming the positive ones. As I said - he spent 6 years looking for <i>something</i> to counter his empirical results, and published when he came up with it.<p>Note also that I&#x27;m not strongly endorsing this work - I&#x27;m just pointing out the strong desire to not publish a result against diversity.