Following up on Loic’s previous entry, what to do with the most brilliant idea for which you find absolutely no proof or information? It starts with those mildly annoying frantic searches for secondary literature on an issue related to your topic which you don’t want to discuss, but want to refer to in a footnote nevertheless. It includes questions such as Was Adam Smith homosexual? (he must have been – I’m absolutely sure). But above all, it encompasses all those daily questions regarding your topic you simply cannot answer because there is absolutely nothing to answer it with. What to do with them?
And PS: What’s the ratio answerable/non-answerable questions?