Future Searching

I'm always amazed when I search for some obscure topic on the Internet and get a perfectly good answer in seconds. I'm just as amazed when I find a hole in what the Internet can tell me. I wonder how different life will be when most of the holes are plugged.

Example:  What is the most profitable ***LEGAL*** cash crop that an inexperienced farmer could plant on five flat acres in Northern California? And I want the choices sorted by how much effort is required for each sort of crop. I would ac...