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termain

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That's generally what you should do with a scientific model: state your assumptions and methodology clearly.

And most if not all scientific and engineering models spread properties across a group of objects and use averages. R_0 is an average. And it's the average behavior that matters here

In a well tested population, you might be able to focus interventions on infected people and their contacts. In the US population, the people most likely to spread the disease are those who interact most with other people. That means getting those people to reduce their interaction rate.

It's a semi-empirical model, as are many if not most models used to make decisions.

I created this entry. It's evolved considerably.

I do still recommend the original source I used: The Concise Guide to American Aircraft of World War II by David Mondey. It's great.

Seconded. Masters in ASE, written my own vortex lattice code from scratch.

"Wings generate lift by changing the velocity of the flow around them" seems general and correct but the why part is pretty tricky without notions of continuity and conservation laws. And vorticity helps a lot, too.

In an absolute sense you're not going to prevent any deaths unless you're preventing lives. Everybody alive is going to die.

One less death relative to what?

It's quadratic. Polynomial would also have been acceptable. But what they meant to say is "superlinear". Like aetherson, this drives me nuts.

Presumably, those estimates are just for the Space Shuttle Main Engines (SSME/RS-25), give that's what Rocketdyne was manufacturing and propulsion is one of Marshall Spaceflight Center's fortes.

"Yes. I'll also add the 4-year education is incredibly inefficient, in terms of skills added over time"

I'm uncomfortable with the idea that a university degree is entirely about workforce skills.

Edit: Ok, ok, I totally screwed that up. Damnit. Sorry, everyone. Grams aren't kilograms. The freaking base unit shouldn't have a prefix.

2000mg/kg = 2, right?

Like 2kg of medicine for every one kg of body mass? That seems impossible to consume. Even 0.1 kg/kg seems really, really high.

Or is mg here used for micrograms rather than milligrams? So it's actually 2000 μg/kg.

It does, it's just kind of wrong. Things are more interesting than that.

Dash 80 was a nickname for that particular plane, it's model number is 367-80. The 707 is a slightly different aircraft that generally isn't referred to as a "Dash 80".

The Dash 80 was the prototype for the 707, but strictly speaking, it's model number isn't 707.