Early in season two we get one of my favorite TNG episodes.
Yes, it is up to debate if Moriaty should have been able to achieve this kind of power from a simple mishap. But I think that is the one concession you have to make in an episode that asks, in essence, the question if conscience and self-awereness equals life. A topic very much Star Trek.
I really enjoy Daniel Davis performance as Moriaty. He is perfect for that role.
@finfan It took me some time to finish the episode. I am a fan of Arthur Conan Doyle, but I miss genuine space mysteries. Daniel Davis was great and I felt sorry to say goodbye to his Moriarty (he remends me of Tuvix from Voyager, but that one was a darker episode).