I'd like to know just enough. Sometimes knowing everything there is to know about something is great, other times ignorance is bliss. So I'd like to know just enough at any given time.
Although, in saying that, I watched Back To The Future earlier and knowing the results to every sporting event over say, the next five years would be great. Through betting on the results, I could turn the £18 I currently have in my bank account into £18 million over the next five years easily. Which would be nice.
I'd also like to know for sure what's been making me feel like poo for the past month or so, rather than just being told it's probably x but it could be y or maybe even z but let's just assume it's x for now and see how that goes.
Also, knowing the exact right thing to say at the exact right time would be nice. Things like job interviews, debates, sexual conquests, cheering people up, etc. would be a lot easier.