Don't you always have or never have advantage? Our table is confused about how this works. It seems like I can always make a clever argument in any situation for why I have advantage, and the GM could always make a clever argument for why I don't have advantage. e.g., convincing a guard to let me in:- I'm a former solider, advantage- He was drummed out of the militia, advantage- I'm making this clever argument, advantage- he's not bright enough to get clever arguments, disadvantageand so on