When Dominic is shooting pool, he takes a shot that ends with the cue ball near the corner pocket. In the next scene, he is lining up for a shot, and cute ball is midway down the side.
When the pathologists prepares to start to dissect Tyler's body, he picks up and activates a cranial saw. An autopsy would normally begin with a Y incision on the chest from shoulders to sternum with a scalpel. Even if the pathologist was going to start with the skull, they would first peel back the scalp, once again with a scalpel.
When Tyler brings Mrs Sikes the flower he is touching it with his bare hands and the flower doesn't turn to dust.