Gerard 't Hooft despite his Nobel Prize is incredibly naive about causality. He thinks advanced causation is irrational and threatens science. He does not seem to be aware of Wheeler-Feynman - hard to believe, nor of David Deutsch's, Seth Lloyd's et-al work on CTCs in quantum computing, Aharonov's destiny post-selection, Tony Valentini's signal nonlocality etc. He still thinks the Grandfather Paradox is a real obstacle.