Seems there were a few programs in the 1950s and 1960s that did spray substances from aircraft on US citizens. . .
Quoting: George B This is VERY true. However, just because it's proven I had sex with a woman before does not mean I'm having sex with EVERY woman you see.
Same thought process.
I suspect my primary motivation for getting irritated at many CT believers comes down to the sheer arrogance with which they address anyone that doesn't agree with them (they're not alone in this ... hell, even I've been guilty of it, I really shouldn't judge.)
Disbeliever: "Please show me any proof that that trail is made up of chemicals."
Believer: "LOOK UP!!! ARE YOU STUPID?!?!"
Disbeliever: "That's a contrail. Nothing new."
Believer: "It's persistent!!! You're an idiot!!! That PROVES it's a nefarious plot from the government!!"
Disbeliever: "Persistence is not proof. Contrails can trigger cirrus clouds."
Believer: "That's not true!!! You're paid by the government to disagree with me!!!"
Disbeliever: "Here's photographic evidence that this has been going on since before ww2."
Believer: "You photoshopped that!!!"
Disbeliever: *sigh* *walks away*
This mock conversation I just wrote out is a pretty accurate portrayal of how these conversations usually go.
Even though the person making a claim has the burden of proof even when a disbeliever submits evidence contrary to the believer's claim, it's instantly rejected.
As another poster stated: It's like a religion.