If there's one thing we know about Nick Robinson is that he can do no wrong. Never mind 'papal infallibility', the popes have nothing on the BBC's Nick.
It sounds as if his latest Political Thinking with Nick Robinson isn't quite as friendly as normal. And, inevitably, that's now spilling over onto Twitter:
Katharine Birbalsingh: A lively ding dong between me and Nick Robinson for 40 mins. We disagree politely and but you can hear how annoyed he makes me! Well worth it to hear a little of my backstory and what I think is important for children to succeed.Nick Robinson: It was lively, interesting and enjoyable but if I were your teacher I’d ask you to write an essay explaining “the difference between disagreeing and asking challenging questions”.