Okay, so now we've got a doctor from Rady's stating he thinks Max was suffocated, and that Max's visible injuries were not consistent with his internal injuries. And we have a little boy with scrape marks (abrasions) down his spine, as though he were dragged down the steps. So could someone have suffocated Max, then dragged him downstairs to stage an accidental "fall" scene? Could someone have known Max suffered oxygen deprivation and would in no way recover to say what happened, long before he even got examined by doctors? Just some speculation on my part.