@taoeffect I worked at FEMA in the aftermath of 911 by the way, I helped with the investigation.
But more to your point, yes, you are probably sowing seeds of doubt, at least in some people. I often find if people change their mind it is often days or even weeks or months after a conversation. For me every time ive ever changed my mind on anything it was with atleast some delay, even if it was just minutes.. .particularly if it was something i had already established in my mind.