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# Haha spot on
And add this nail to the coffin:

'The first published reports of contrails appeared during and shortly after World War I when aircraft were finally able to reach the altitudes required for contrail formation. An early example of contrail formation was observed during the flights of the pilot Zeno Diemer in 1919, when he reached altitudes as high as 30,500 ft above Munich, Germany. '
(, Thu 16 Apr 2009, 16:00, archived)
# jesus christ, i will have to remove my brain to cope with you guys
You don't know the difference between contrails and chemtrails? one disappears in a minute because it is frozen ice crystals, the other stays in sky for hours, and is a concoction of all sorts of chemicals and crap. But you never investigate it, you just sit and mastubate each other and giggle.
(, Thu 16 Apr 2009, 16:30, archived)
# no, the time it takes a contrail to disappear depends on the humidity of the air
it doesn't always disappear quickly.
A simple piece of investigation will tell you this
(, Thu 16 Apr 2009, 16:41, archived)