What's more interesting is the trail formations which occur when the flight and atmospheric conditons don't change, but all of the sudden the trails start and stop.
Flag ranks in the Air Force have also expressed similar concerns. The issue is bantered about by Conspiracy theorists, but there do exist serious questions about them from soundly reasoned principles.
My take is that at least 5%to maybe 50% of discussion on issues in the bill have some substance, but at least 30% to 70% seems like poor judgment.
Most people aren't patient enough to consider the issues beyond the visceral nature they exude. Besides, it might very well be B.S., but the lack of any official acknowledgment is disturbing. It almost condones ignorance in the public forum rather than reasoned understanding and support. There's something wrong with this picture, and I don't know what it is.
When the flight and atmospheric conditions don't seem to change, actually. Even in a section of clear air, there can be definite areas of greater or lesser moisture, temperature, and airflow. Air masses where the conditions for contrails are better or worse, sometimes by a change in humidity of only 1 or 2 percent, or a change in temperature of only a degree or two, or a combination of them all. Thus, the contrails do stop and/or start.