Well-known interviewers choose the people they wish to interview.
"Quentin Crewe is a newspaper columnist, author, and traveller (most recently he set off across Arabia's Empty Quarter). In the twelve years we have known each other I have watched, with increasing admiration, him following this active career in defiance of a worsening disability that most people would regard as totally incapacitating..."
...is why Kenneth Allsop talks to Quentin Crewe.

See page 11