That doesn't matter, if he can learn it without going through the necessary steps to otherwise do so.
And consider this:He went into the sea. There are more than one possibility after that, however. There is the possibility that he would black out, another that he found stay perfectly conscious, another that the virus would have already dominated his mind, ect. There cant be just one, since his going into the 'sea' would make yet more possibilities to possibly happen. As soon as he went into the sea, more possibilities, and thus more Kiviths happened.