Ultimately, of course, this is all just a bunch of people being brave in hindsight. We know that guns are effective at deterring normal crimes, however an insane shooter obviously offers a different problem. At some point a shooter is going to run up against an armed citizen, and then we'll find out for sure just how effective they will be. Hopefully that armed citizen is responsible and capable of using their weapon effectively and are not just carrying around a gun to feel safe.

While I don't know the exact composition of regular jet fuel, I'm pretty sure it is just as combustible as pure hydrogen if not more so.

As naive as it may sound, why not just do less illegal stuff?

Who says they are doing illegal stuff? The government's alleging it, but in the ordinary course of events, the 5th Amendment is supposed to protect us against being required to give evidence against ourselves. We are supposed to be presumed innocent until proven guilty in a court of law.

As annoying as that is, at least I understand the commercial desire to maximize profit.

If it was about contrails, most of you guys would still be wrong. Contrails aren't caused by the turbines, they're caused by the air passing the wingtips of the aircraft. If you want to learn more, there's wikipedia for that.

Contrails (play /kntrelz/; short for "condensation trails") or vapour trails are artificial clouds that are the visible trails of condensed water vapour made by the exhaust of aircraft engines. As the hot exhaust gases cool in the surrounding air they may precipitate a cloud of microscopic water droplets. If the air is cold enough, this trail will be comprised of tiny ice crystals.[1]

The wingtip vortices which trail from the wingtips and wing flaps of aircraft are sometimes partly visible due to condensation in the cores of the vortices. Each vortex is a mass of spinning air and the air pressure at the centre of the vortex is very low. These wingtip vortices are not the same as contrails.

Very, but they still get to vote. Three guesses as to which way "they" lean.

Seriously, I want to laugh (and I do) but this (TFA and the sprinkler idiot) is troubling. Not just because these cops are stupid, but because it reflects a general failure of critical thinking across our society. The intellectual capacity required for a reasonable skepticism seems to be escaping a larger and larger swath of the populace, a swath which apparently now takes in those in important public safety roles. We're doomed.

There is some very interesting research that indicates even the tens of thousands of years of farming prior to the industrial revolution may have altered global climate significantly enough to be detected.

Self-taught programmers might not know design patterns by name, but they will likely stumble upon the more common ones on their own. When they finally learn about design patterns, they will understand the topic better because they "invented" some of the design patterns themselves. That's how it was for me at least. One day I was explaining something to another programmer, and after my long explanation he just looked at me and said "Oh, so you're using the visitor pattern." I tilted my head, went online, and learned a new name for something I had been using for years.

Besides, doesn't the claim "no hypothesis can be proven" invalidate itself?