I agree, 3 years may be the best from the employee standpoint, but a bad deal from the employer. I'd be reluctant to hire someone who I see is changing jobs every 3 years. And I think about how it looks on my resume if I am changing jobs too often - that won't keep me in a really shitty job, but it does affect my actions in other circumstances. 5 years is a better average. Employers can keep me for even longer, especially if I am still learning a lot on the job and/or the money is great and the work environment is enjoyable.

"Crashes" generally don't involve evacuation, because every one is instantly dead. Situations like US Air 1549 (the one that landed on the Hudson) or AA 383 (caught fire on take off) are much more common. No one died in those, but would the results be different if they were more packed? Emergency aircraft evacuations happen about once every 11 days in the U.S.

Good link, but he is really saying we need better livestock management, not more livestock. We can use the livestock we have on marginal lands to improve the land and the climate; at the same time we get rid of the feed lots that are raising grain fed cattle.

Your wild herbivore argument is a strawman - you don't need to go to zero meat, you just go to a lot less meat, and if hunting that little bit of meat keeps the wild herbivore population under control that is fine. Wolves and mountain lions work too.

Most of those centuries are pretty insignificant. 0.03 billion tonnes/year in 1800, 2 billion in 1900, 6 billion in 1950, 36 billion in 2015. If we could reverse the last 50 years we'd be doing pretty good. Of course we can't reverse anything until we stop producing more.

executing the check and branch may take longer than the division.

A jet crashing into my house would be very bad for both me and my PV panels, but would have almost no effect on the electrical grid nor leak radiation. Comparing it to the standards for a nuclear plant is quite silly. And I'll stand by my statement that anything that survives golf-ball sized hail is not "fragile". My car and my shingles did not.

PV collectors aren't that delicate - my house got hit by golf-ball sized hail, which destroyed the shingles, but did not damage the PV system at all.

Of course they won't actually say that. But their behavior reflects that attitude, and their base is too uninformed to figure it out.

*she

Facts have a liberal bias.

Well, as long as we are diving into anecdotal evidence: Steve Jobs, Carl Sagan, Stephen Jay Gould, Francis Crick, Margaret Mead, Andrew Weil, Richard Feynman, all losers with no drive to succeed, right?

Sounds like Marx was right about that.

Regardless of what you or I think, he broke the law ... sometimes that's the right thing to do and I think he deserves praise, not punishment, but a pardon would prevent him from being prosecuted for those violations. A medal would not, and you never know who will be in office next.

No, those who are not "mentally strong enough to behave" are the ones that are recruited to wear suicide vests or shoot up abortion clinics. The religious types who are not evil are the ones who are mentally strong enough to behave morally despite their religion.