6pm.net

You can ask these questions and more and Dr Johnson will answer FROM HIS PUBLISHED WORKS.

This means that A.I. scours everything he's written and puts it into an answer on his website.

It's artificial intelligence applied, BUT at least it comes from valid information and not a patch work of random Internet articles. Does it fail? AI sometimes doesn't understand the question – or maybe I just don't know the answer so it's not in the database. But give it a try.

And it's free.