Re: Contrails cannot form into clouds (proof!)
So, when the baggage handler on the tarmac can see his breath, and the cars in the unloading zone have visible exhaust, what is your reason for jets on the taxi-way not having visible exhaust?
What I hear you saying is the jet exhaust is so much hotter.
Condensation occurs from the difference between exhaust temp (breath, jet exhaust) and ambient temperature. Therefore jets on the ground should show visible exhaust, like a car, when it's 20f and below, if the world worked as the way you suggest with you pseudo-science.
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