It is not what I believe, it is what I know – said Sir Arthur Conan Doyle about the innumerable tricks and hoaxes he was haplessly subject to in the course of his long life. Despite Harry Houdini’s steadfast efforts to convince him to the contrary, Sherlock Holmes’ dad remained certain about the powers of Spiritualism: he saw plenty of conclusive evidence.
Just think of what Helder Guimarães could have made him believe – err, know:
Unbelievable. We know there is a trick. The whole setting, and the magician himself, give us conclusive evidence: there is no way that this is not a trick. Yet, it appears as just the opposite. This is the deep beauty of sleight of hand magic: it blinds us with evidence.