Socrates was famously declared the wisest man in the world by the oracle at Delphi, which caused him http://classics.mit.edu/Plato/apology.html. Lesson: oracles have always been an issue - there is nothing new under the sun. Being a proto-Bitcoiner, he didn't take the oracle's word but set out to verify this for himself, consistenly saying that the only reason it could be true was that everyone else proclaimed to some knowledge, while he at least knew that he knew nothing. Please find all the nothings we know below.
An appetite for more¶
If, instead of Ancient Greeks, you prefer culinary analogies, please enjoy this list put together by Bianca Trovó.