This candidate's refreshing. It felt like I almost knew him after his minute was up - I've met someone rather like him, I think, but he had an East London accent, listened to Tom Petty and claimed to be joining an expedition up Mount Everest.
Back to Stephen. Rather than your typical 30-to-40-year-old PhD-scientist-mechanic space fan, he's a world explorer. And he has the appearance of someone who's lived life fully, in every imaginable climate. He claims to have visited 160 countries. How can he possibly keep count? He shows pics of himself drinking tea (spot the spoon in the tin mug) on a Sahara trek,