I would think security wise it would be like medication. Everything from highly trusted,tested and expensive sources to the free for all of the black market. I

I would think security wise it would be like medication. Everything from highly trusted,tested and expensive sources to the free for all of the black market. I would suspect you are right though that the idea of a knowledge injection is absurd. If an athlete takes steroids they are injecting strength in one sense but not like a movie that they take the injection and are superman 5 minutes later. Surely, there are biological processes that can't be sped up all that much unless we are talking about complete science fiction with total mastery of biology.