3-1-1 is rarely enforced. I always got confused why the 100ml limit existed, since I could just take multiple bottles of 100ml of whatever I wanted and it was okay. Then I realized that technically I only could take 3 bottles but I’ve been getting away with more for decades.

Yeah, I flew thru Eindhoven Airport in the Netherlands a few years ago, and I couldn't believe they let me through with water.

The security used something I would describe as out of an Iron Man film, they were zooming around a translucent 3D view of my backpack. (It was on an LCD display instead of hovering midair, but I was still impressed. But the fact they let me keep the water was even more amazing, hahah.)

> Not because of a sudden outbreak of sanity, but because they have CT scanners now.

What's is the evidence for believing so strongly that airports all over the world have been prohibiting large amounts of liquids due to widespread insanity?

I would say just as if not more important are probably some advanced nitrates detector.