I would like to throw two items out to the floor for theories and discussion:
1. "He is Mar" Could it actually spell something else and it just appears to look like the letters he is mar because it was scrawled by a dying and delirious man. What else could it say? Look at a still photo of it. The H could be an 11. The M looks suspect. The r could be a p in the making. Any theories?
2. Has Heller actually given the viewers enough clues to solve the mystery of Red John or is it just guesswork at this point?