I'm feeling quite sure about a conclusion that was mentioned just above, that is: Chris doesn't want the sample (assuming it exists) tested, as it would undoubtedly come back as something mundane. This would mean he could no longer claim to have a 'potential' sample, and BFers really, really need something to hold onto lately (due to all the crap and frauds pulled by various other BFers - all of which have tarnished beyond repair any remaining 'authority' these Bfers may have had in the past).
We just can't allow our (potential) illusions to be proven wrong - much better to go through life with a tiny chance it may be something, rather than know for sure it's not significant.
Similar to many religious I know, they simply cannot give up their (illusions, delusions, conclusions, 'feelings', whatever) because as soon as they do, they (correctly) suspect their entire worldview they've built up around it - decades worth - comes crashing down. Their whole lives are wrapped around these fantasies, and one simply cannot allow a tiny fracture in the structure, otherwise the whole thing might collaspe : leaving them with either admitting they wasted much of their lives believing this crap, and/or feeling worthless, depression, loss of job/income/friends/etc.
Such people have so much invested in their beliefs it's simply unthinkable for it to all be false, or based on lies/fraud/deciet/mistakes.
I used to feel sorry - pity even- for such people, but not anymore. Nowadays, I frequently end up responding along the lines of 'either keep your BS to yourself, or go to some other country/place/deserted island where you can keep your fantasies from the rest of us - we have enough problems trying to keep (insert fundamentalist religion here) from dragging us back to the middle ages...