Certainty is irrelevant, even if you are certain you still have serious problems making any use of this knowledge; there is no convenient stock named RBTS you can just buy 500 shares of and let it appreciate.

Example: in retrospect, we know for certain that a great many people wanted computers, operating systems, social networks etc - but the history of computer / operating system / social networks are strewn with flaming rubble. Suppose you knew in 2000 that "in 2010, the founder of the most successful social network will be worth >$10b"; just how useful is this knowledge, really? Do you have the capital to hang out a VC shingle and throw multi-million-dollar investments at every social media thing that comes along until finally in 2010 you know for sure that Facebook was the winning ticket? I doubt it.