Much of the discussion has seemed like an egg-centered debate: soft or hard, but it won't be over easy. A soft Brexit means staying closely aligned with the EU on trade, and is favored by Britons who oppose leaving. Hard means a clean break, and that could cost an estimated 9% of GDP cumulatively, along with 450,000 jobs. Pro tip: If a Brexit discussion gets too detailed, scare the other party off by insisting that a hard exit would "force the BOE back to the ZLB with more QE." Just in case your bluff is called, that's Bank of England,...