That is the worst bit that i've ever read on chemtrails. First of all I wouldn't fly with a pilot that couldn't spell it.

The contrary view of the chemtrail conspiracy is that what people are perceiving as chemtrails are persisting spreading contrails that do occur at altitudes where it's cold enough to form ice, and the relative humidity is above 45%.

My argument has been that I consistantly photograph aircraft that exhibit this persisting speading contrail when the upper level atmosphere is considerably dry.

The only way to prove this theory would be to fly a simillar aircraft at the same time and altitude as the aircraft releasing the persistant spreading contrails .

This would certainly be harder to refute, if it could be done. Unfortunately, I don't have a 747.