Certainly there are individuals who have had that kind of impact, but I don't think one could have foreseen the consequences at the time, e.g., Jesus and Mohame

Certainly there are individuals who have had that kind of impact, but I don't think one could have foreseen the consequences at the time, e.g., Jesus and Mohamed. Likewise, the guy who invented the Segway probably thought he was going to revolutionize personal transportation, but that didn't pan out (yet, at least).