I considered this because of your article Light Arts, and rejected it because I disagree with that article in at least some cases, this being one of them. I could talk about it as I think about it -- a good idea that people, even scientists who should know better, reject because of unwillingness to think about death and unwillingness to believe it isn't final -- and let him draw his own opinions on why it isn't common knowledge (like I could prevent him anyway), but saying myself that it has a reasonable chance of being a conspiracy, or even implying it, is not something I could do.