It would be interesting to search for answers to questions, then to use an AI to test if the pages offered as search results answer the questions, and which one

It would be interesting to search for answers to questions, then to use an AI to test if the pages offered as search results answer the questions, and which ones do the best jobs. The AI might even be able to tell us how hard it is to find the answer on each page. Google could even change page ranks based in the results. This could greatly improve search results. I can imagine an AI help system that fixes itself by actually trying what it suggests and learning how to do so it knows when it is about to give bad advice. (There are AIs that claim to be able to use PCs right now.)