Err... Cameron campaigned for remain...A collegue legitimately just tried the line Cameron said 'out means out' and we should go to WTO lines and just spouted out the same thing when I pointed out nobody on leave actually campaigned for that.....
This is supposed to be a person who can actually engage in critical thinking...
Elsewhere, this is a little on the long side, but a decent summary of the remain argument: https://www.quora.com/Why-are-Remai...is-what-is-best-for-the-UK/answers/154093759?