Mr. Hart Brindell has been in similar situations countless times: situations in which he is unable to fully comprehend the verbal information he is receiving. His mind, given to automythologizing, has decided that some party is actively working to block critical information from him. Fearful of succumbing to paranoid delusion, he has taken care to formulate a plausible hypothesis.
He has assigned blame to time travelers who need to prevent him from making certain cognitive links that will add up to an idea that creates a reality they oppose. Desperate to maintain a sense of decorum, Mr. Hart Brindell refuses to voice this hypothesis to others, or seek assistance of any kind. After all, who is to say that these future-folk are wrong? And who is to say that they couldn't have simply killed him? He has taken this as a show of good faith, and though he is an affirmed atheist, decided that if there is to be an invisible force influencing his actions from a distance, this one is acceptable. It is this ability to compartmentalize his paranoia that allows him to seduce a woman like Genevieve Reed, to involve himself in sex stuff with her, and to father several children with her.
Unfortunately for the future-folk who so boldly meddle in the affairs of the past, one of Mr. Hart Brindell's descendants will do some really rotten shit and make a mess of things anyway.