Sometimes you're not sure about a player. Sometimes you doubt. Sometimes you have to guess. Sometimes... you just know.
Now, I think that in acknowledging that every individual Member of Parliament and indeed every individual member of the Labour Party, has rights to express their view in a spirit of tolerance.
But they are not going to take on Big Oil because Big Oil is very generous at campaign time, and this is all about the elections. They want to pretend that they are doing something meaningful.