PHIL FRIEND

Let me start with Mark Mardell. Mark is a former BBC journalist — World Affairs Editor, North America Editor. He has Parkinson’s disease. Last October, he arrived at Istanbul airport to catch a Turkish Airlines flight home to London. He’d checked in. He was at the gate. And then he was told he couldn’t board. Turkish Airlines had a policy buried in their small print: Parkinson’s was the one condition — just Parkinson’s, not heart disease, not diabetes — requiring passengers t