I have more information in one place than anybody in the world.
The importance of information is directly proportional to its improbability.
In any ethical situation, the thing you want least to do is probably the right action.
I think it takes about a million words to make a writer. I mean that you're going to throw away.
Asimov was the reason why we changed some rules in the SFWA, and I'm not convinced we changed it for the best.
To doubt everything or to believe everything are two equally convenient solutions; both dispense with the necessity of reflection.
You no longer have much in the way of knowing what to do in a big, epic novel about the future, because nobody knows what the hell is going to happen.
Heinlein never had a best-seller. Even, I think, with Stranger in a Strange Land, I don't think it was actually on the New York Times best seller list.
And that's another piece of advice I'll give junior writers; when you get to the point where they take you to lunch, let the editor suggest where to go.
So, I guess the answer to your question is very few people can bring off a novel of the future because it's just so damn hard to make it look like the future.