No, whether the combustion strips behind airplanes are a secret plan to spread alzheimers, since they contain barium and alluminium. :facepalm: . When I told him that it is definitely a possibility, but that he should think it through and doublecheck with other sources besides the PDF he got in the mail. I asked him to think about why "they" would want us all to have alzheimers, any leader needs an apt working force and think tank, especially if he's going to unite the entire world under one government. He went all defensive and told me never to speak to him about serious matters again, how I'm not the one to tell him where he should get his info from. It's sad to see such an intelligent man fall for this, it only started in the last two years or so. My dad's been AC'd