Interesting stuff, I don't agree with the 'bigger isn't necessarily better' conclusion he came to. Sauropods lasted a good 150 million years, and it took a massive worldwide external extinction event like an asteroid strike to take them out.

Humans have been around in some form for a fair bit less than 200,000 years. Stretching that to apes you can get to 10 million at a push. Even the early primates probably wouldn't have had their break if it weren't for that extinction event a mere 65 million years back.

Come back to me in 3 million generations and I'll ceded the point.

Ignoring the rambling narrator, the few numbers we can see say even 200 GtC passes the tipping point in over 1/3 of models, assuming emissions peak soon, decline to current levels by 2030 and then decline much faster (all total pie in the sky optimism) hits 2 degrees rise by 2100, and the best case scenario estimate with aggressive mitigation (that we aren't doing) and as yet uninvented technology is 250-540GtC.
That's total failure and unavoidable doom.

The reason Switzerland is the safest place in case of a war is not its bunkers and fall out shelters (though, referencing the book "Place de la Concorde Suisse" by McPhee, this video does do a good job explaining Swiss paranoia)

Switzerland is the best place to hide in a war because:

Everyone from oligarchal and totalitarian states hides their assets there. In Swiss banks. And no one has been stupid enough in 200 years to blow up the bank holding their assets.

Man. I'm just trying to break into the top 200.

The American system is stacked toward the wealthy.

He inherited 200 million in NYC condos in the early '80s. If he'd held on to them, they'd be worth an estimated 12 billion today. If he'd sold and put the money in indexed stocks, he'd be worth 10 billion today. By his own most generous estimate he's worth 8 billion today (and less biased estimates have him out of billionaire status entirely).

Trump filed for bankruptcy four (I think, might have been more) times, each time structuring his debt so the shareholders got screwed and he got away clean.

He's accepted hundreds of millions of dollars worth of sweetheart loans from Russian banks. Every American bank has him blacklisted.

He's screwed contractors, employees, and practically everyone he can for years.

He's stiffed debt collectors for decades.

He's paid no taxes for decades.

In spite of all those benefits, he's still managed to lose approximately 90% of the massive wealth he inherited. Yeah, brilliant person.

BTW, every time I hear about the Dunning Kruger effect, I think of you and all the other Trumpites, Bob. It's worth giving some critical thought, if you can manage it.

"Literally doom the human race."

I used to be a global warming denier, then a skeptic. I've come around that it is real and that it is caused in large part by human actions. I do admit that I'm still a bit skeptical about how catastrophic it would be to do nothing. Doom the human race? Nah. Decimate the human race (literal/historical definition of "decimate" meaning 10% dead)? Possible, but I think unlikely -- extremely unlikely unless deaths by famine/disease are wholly attributed to climate change. Lots and lots of people displaced over the next 100-200 years if, say, all polar and glacial ice melted (resulting in a ~70 meter sea level rise)? For sure. But they won't drown unless they are incapable of moving away from the ocean at a rate of at least a few meters per year.

In climate terms, a 4 year presidential term is a fraction of a second. In geological terms, 4 years is absolutely nothing. If the (admittedly terrible) climate policies of any single person, even one as powerful as the "leader of the free world" President of the United States over 4 years could literally doom the human race, we'd have been dead a LONG time ago.

I'm not saying it isn't important, and that it won't matter at all what Trump does with regards to climate, the EPA, etc. But even if you limit the timescale to sensible human terms (say, since the Industrial Revolution roughly 250 years ago), another 4 years, no matter how bad, aren't going to throw us over some sort of unrecoverable tipping point.

I think Americans woke up to the reality of state-run healthcare only in the last few years. Right now they're just getting used to the idea, but ultimately this GOP ploy will probably backfire in a huge way. The best way to get anyone to notice the value inherent in a program is to take it away from them or sabotage it to the point where it becomes useless.

I've seen so many interviews with middle age to older Americans who voted for Trump because Obamacare increased 200% in cost over a few years and now Trump's going to blow that up by as much as 750%?

Good luck in the mid-terms Republicans.

I once watched a demolition derby where everyone had 100-200 dollar cars. fun stuff.

I guess the hint for these is the rotational test that they show at the first.

1) A sticky object that would let go like a wall crawler that climbs down a wall would create this effect. (see below)
2) You can't. As you approach infinite speed it would get very close. (see below)
3) The bike will move forward. (see below)
4) The outside parts of the wheels that overlap the rail. Also if the train has a flywheel that is larger than the wheel size the bottom of the flywheel would also always move backwards faster than the train was moving.

1) He says "what object is inside?" so I'm not sure a liquid would count. Also a viscous liquid would flow a slow rate and would probably not stop and start. You might be able to get a viscous liquid to stop and start if you had fins, but that still might just move slowly or gain enough momentum to roll fast without any flow.

2) A little excel calculation shows that the average velocity approaches twice the initial but will never hit it.

attempted m/s - total time - average m/s
1 100 1
2 50 1.333333333
3 33.33333333 1.5
...
200 0.5 1.990049751
201 0.497512438 1.99009901

3) I'm not sure if the parameters of this experiment are explained sufficiently.

If it is allowed to slip then no matter the mechanical advantage a hard pull should always be able to get the bike to skid back and defeat friction.

If the bike is not allowed to slip on the ground then I don't understand how it could ever move backwards, the only options would be that it doesn't move at all or it moves forward.

If it can't slip then the ratio of the pedal to the wheel is what is in question. Bikes only have gear ratios higher than 1 and the crank is smaller than the tire so the tire will always rotate more than the crank thus the bike should move forward.

Agreed, but the landlord sets the rate ahead of time. If that's what she contracted for, she has no right to complain later. I also have to wonder if that's $50 each, so $200 per night, because that would be more in line with normal prices....although you can get insane deals if you're there in a storm, most people won't drive and/or ski in white out conditions so there are a lot of cancelations.
Or maybe it's really just a shed and $50 is overcharging? ;-)

Idiots, the thief and the construction workers.

-Jumping onto of a moving vehicle
-Punching the windscreen(not possible to break with your hand).
-Holding on the car as it continues to gain serious speed
-RAMMING SAID VEHICLE (causing $$$$ damage to your own car)while your colleague is still hanging onto the front.

For what? a $200 bit of machinery? Not even worth the damage you'd do to your hand from punching the windscreen (considering you're a construction worker and your income relies on working hands!) let alone the potential brain damage, disability or death if you come off the bonnet.

I'm also not sure how the law would interpret ramming a car off the road, or flipping it, or squishing it against other cars and causing more collateral than the tool is worth (which you'd have to do to make it stop), just to stop a petty thief. And honestly if you damaged my car to stop a thief, you'd be paying for my car.

Do these people think they are living in an action movie? I know the Terminator jumped onto a car and punched through the windscreen, but they used a hydraulic ram and hid it with special fx.

Idiots.

Would love to see how this ends though cause I'd be very surprised if everything /everyone was fine.

I'll just deal with murder.
As I read that, he's not saying don't murder, but saying you'll be judged if you do, in the same way you'll be judged for being angry with a brother or calling someone a fool. If the murder is in accordance with the rules set forth (ignoring that pesky commandment) then judgment holds no danger.... no harm, no foul, go directly to heaven and collect your $200.
He clearly states that all the rules as set forth still apply, and you had better follow them unless you're righteousness surpasses the Pharisees.

For reference: flows at the their highest out of the spillways were exceeding the flows at Niagra Falls---

And---in 2005, 3 environmental groups tried to get the State to concrete armor the emergency spillway---they protested it would be too expensive and not necessary...And of course, with the main spillway out of action, the emergency spillway has started to erode as well---and 200,000 people have been evacuated. To my understanding---and I'm not a hydraulic engineer---the risk with the emergency spillway is that the water flowing over the concrete "cap" or "curb" has started to...duh...erode the earth below the cap. If it erodes too far, the concrete cap will tumble off, a 30 foot wall of water will cascade over the edge, the the dam will start to erode...

...tears of joy. ;-)

There was one of these in a national forest near me, with wheels attached to numerous trees used as pulleys to hold the downhill rope up and a tireless motorcycle providing power from the top. It's far longer (150-200 yards) and steeper than this one. Now it's abandoned with the motorcycle gone, but it was used for years. Old school.
They used to have these at real commercial slopes with handles attached, they were called T-lifts.

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