What is this trail in the sky?

How many synonymous search terms did you try before lucking into “squiggly”?

If anybody says a plane can’t do that, then a plane did it. (Cite: Exapno Mapcase, Post #5.)

A plane can’t do that. (Cite: Xema, Post #10.)


Therefore, a plane did that. (Posts #5 and #10; Modus ponens)

Except on the Straight Dope where the answer is always, 100% of the time “Don’t call me Shirley”

Are chemtrails the same thing we called vapour trails in the 60’s ?

Yes and no: Chemtrail conspiracy theory - Wikipedia

Chemtrails is the word morons use to describe contrails, basically.

Could be ghost riders. Have you checked for ghost riders?

And when anyone says, “What could have done this?” the answer is almost always, “An uncommon variant of an ordinary thing” rather than “An extraordinary thing.”

This is true by definition. :wink: