Great!!... I'm not so sure its a belief as such ... its not a dogma "that which one thinks is true" ... so, you don't believe in them.. yet if there where not aluminium in the air (from their fallout) Alzheimer's would not be what it is today... from my findings, yet.... there are multiple theories as to what it is thats happening above us... might i add, i do also have tons of images of normal passenger planes NOT giving these trails.. flying at similar altitudes. Thanks for commenting pyromaniac. :D