Many people know what we want
This is priceless. Many people know what they personally want, but they are mutually contradictory.
So, do we go for Hard Brexit? Invoke Article 50 early next year and then spend 2 years trying to negotiate a clean exit? Followed by opening up WTO negotiations, with up to 160 nations in the WTO? Trade deals can take 10 years, but six seems quite a reasonable time, so at least 8 years of uncertainty seem very likely.
Or take the Daniel Hannon line - and go for an EEA type option which gives us access to the single market, doesn't control immigration, and has us paying in something like 85% of our contributions with no say in the laws being made? This is so similar to what we have now that it would be a complete waste of time.
Or, listen to the racists, and round up all the immigrants? No key Brexitter has said that, to my knowledge, but a significant number of people say they want that.
It would be laughable if it wasn't a serious issue.