Expert witnesses are not reliably credible authorities. They are people with credentials hired to help win lawsuits. I'm sure the author knows more than I do, but that doesn't say much.
It's not about his testimony on this particular issue. In fact, it does not appear that he has given any. It's about his qualifications to potentially testify. Even so, in American courts (in which he has previously qualified,) the qualification process is adversarial and involves both direct and cross-examination, so if he wasn't actually qualified, the opposing party would certainly argue as much.
It's not about his testimony on this particular issue. In fact, it does not appear that he has given any. It's about his qualifications to potentially testify. Even so, in American courts (in which he has previously qualified,) the qualification process is adversarial and involves both direct and cross-examination, so if he wasn't actually qualified, the opposing party would certainly argue as much.