TBH the fact that Davis can't make his mind up at least suggests he is thinking properly about it. May is guaranteed to be wrong.
May is guaranteed to be wrong, over the 'negotiations' is very much to the point.
Davis changes his mind more than anything. Take the border with Ireland one minute there will be 'no checks' then they will be 'light'. Not a good sign really. The Tories refuse to discuss the border with Ireland after Brexit, even though they claim this election was about Brexit.
A German gets on a plane in Berlin and travels to Dublin. He gets off the plane and buys a rail ticket to Belfast. Said person arrives in Belfast because there is no border checks. He is now an 'illegal' immigrant. The UK government has to hold said person until they can be deported as an illegal. What is to stop thousands doing this to get into the UK I.e Northern Ireland.
Of course, the Irish government can't stop the German travelling to Ireland. If there is a 'light' border, said German will be stopped on the border and detained on the border.
Of course, the UK government could pay the Irish government handsomely, as they do the French. Or they could threaten their trade with England.
No wonder the Tories don't want to discuss anything to do with Brexit, apart from May is a 'strong and stable' leader who will get the best deal for the UK. That is looking more and more ridiculous by the hour.