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Comment Re: Bullshit. (Score 2) 91

"Using a chat program to hide " doesn't even make logical sense.

It does if the chat program using public key encryption between the users. In that case even the mediating servers don't have access to message contents.

The scheme is flawless -- but then it almost always is unless it's devised by a total ignoramus. What they get you on is implementation.

Comment Re:You can't generalize. (Score 1) 379

It does *sound* a bit sociopathic, doesn't it? But sociopathy is a pathological disregard for the rights of others. While deception is often used to violate someone's rights, but it can *also* be used to protect someone's rights.

For example if I knew an employee was embezzling money, I don't have to tell him I know. I can deceive him into thinking I'm not on to him until I gather enough proof or discover who his accomplices are. This is deceptive, but not a violation of his rights.

Comment Re:Speaking of delays... (Score 1) 106

ULA's track record with the Atlas V: 100%

Yes, let's take one vehicle in its fifth generation (not counting subrevisions), and ignore its track record with all of its earlier versions that led up to this point and all of their failures, and all of Lockheed and Boeings' other launch vehicles over time, with all of their failures. Lets also ignore that they're going to have to switch engines soon, to an engine with zero track record.

Payloads typically launch on schedule or within a few weeks. .... Some payloads have been waiting literally years due to delays.

Let's totally ignore that Atlas V launches once per two months, while SpaceX launches once per month, and that almost all of the wait time was due to investigation backlog. When it comes to hitting launch windows, SpaceX has a higher average success rate than average than Atlas V

And lets entirely fail to mention the point that ULA charges nearly double what SpaceX does per kilogram. Or that SpaceX is doing everything while rapidly evolving its rocket, to the point that they've basically even switched propellants partway through (denisification radically changes their properties). And while at the same time running an aggressive recovery and refurbishment programme and developing a heavy lift vehicle, with a small fraction as much capital.

Comment Re:What governmen brought to the table (Score 1) 106

As if liquid boosters can't fail catastrophically? Check out SpaceX's last failure. Liquids are hardly immune to catastrophic failure.

And actually more to the point, you've got it backwards. The SRB failure on Challenger was slow, more like a blowtorch. The explosion was when it compromised the external tank (which, obviously, stored liquids).

Solid propellants aren't like explosives. More to the point, you have to keep them under pressure to get the sort of burn rate that is desired for a rocket.

Comment You can't generalize. (Score 2) 379

Anyone who works on unauthorized personal projects should certainly expect to be subject to firing. But as a supervisor I would make the decision to fire based on what is best for my employer. That depends on a lot of things.

I don't believe in automatic zero tolerance responses. The question for me is whether the company better off booting this guy or disciplining him. Note this intrinsically unfair. Alice is a whiz who gets all of her work done on time and to top quality standards. Bob is a mediocre performer who is easily replaced. So Alice gets a strong talking to and Bob gets the heave-ho, which is unfair to Bob because Alice did exactly the same thing.

But there's a kind of meta-fairness to it. Stray off the straight and narrow and you subject yourself to arbitrary, self-interested reactions.

Now as to Alice, I would (a) remind her that anything she creates on company time belongs to the company (even if we're doing open source -- we get to choose whether the thing is distributed) and (b) that any revenue she derives from it rightly belongs to the company. But again there's no general rule other than maximize the interests of the company. I'll probably insist she shut down the project immediately and turn everything over to the company, but not necessarily. I might choose to turn a blind eye. Or maybe even turn a blind eye until Alice delivers on her big project, then fire her and sue her for the side project revenues if I thought we didn't need her any longer. If loyalty is a two-way street, so is betrayal.

Sure, you may rationalize working on a side project as somehow justified by the fact your employer doesn't pay you what you're really worth, but the grown-up response to that is to find a better job; if you can't, by definition in a market economy you are getting paid at least what you're worth. If you decide to proceed by duplicity, you can't expect kindness or understanding unless you can compel it.

Comment Re:60Ghz (Score 1) 136

I agree it sounds impractical. So I looked at the patent -- which not being a radio engineer it's perfectly safe for me to do (n.b. -- it's always dangerous to look at what might be bullshit patents in your field because you open yourself up to increased damages for using common sense). But I was a ham radio operator when I was a kid so I do know the lingo.

There are a number of problems with broadcasting power, starting with the fact that it's inefficient to saturate ambient space with enough radiation to be usefully harvested. But that's not what they're proposing. 802.11 ad operates in the extreme microwave range -- about 5cm wavelength aka the "V" band. This band is also unregulated so you can try weird things in it. What they propose is to use an array of antennas to create a steerable beam -- like a phased array radar. This would confine the power to a specific plane so that you wouldn't have to saturate all of ambient space with power. The beam steering would be done "dynamically", which I take to mean it would figure out how to maximize signal strength with some kind of stochastic algorithm. So it might not work if you are unicycling around the room.

And because the wavelength is so short an antenna array would be relatively compact.

Even so, it doesn't sound that practical. It's bound to be limited to line of sight, for example: the V band does not penetrate walls or the human body at all, in contrast with the S band that conventional wifi operates on. I can certainly imagine applications for it, but making it practical for charging your phone is apt to be very expensive. You'd have surround yourself with V band antenna arrays.

By the way, reading this patent reminds me of why I hate reading patents. They're infuriatingly vague in order to make the claims as broad as possible, and yet are cluttered with inanely obvious details ("the radio receiver can include active and passive components") and irrelevancies (the device may include a touch screen). I think the purpose may be that someone trying to figure out whether the vague language applies to a cell phone will think, "I don't know WTF this is claiming, but look this phone *does* have a touch screen." It just shows how broken our patent system is.

Comment Re:Speaking of delays... (Score 2) 106

Could you remind me how many people SpaceX has killed? Boeing and Lockheed have certainly killed people in the past.

If you're referring to the AMOS 6 ground failure, ignoring that part of the whole point of flying a stack unmanned as much as you can before you fly it manned is to shake out any problems, is that a manned mission would have almost certainly survived that. Unless the launch escape system failed, despite the drama, that was an eminently survivable. How do we know this? Because AMOS-6's hypergolic propellant tanks didn't ignite until the satellite hit the ground. AMOS-6 had the fairing as some extra protection, but on the other hand, the satellite itself isn't nearly as durable as a crew dragon.

The launch escape system ignites within milliseconds of a failure being detected and almost immediately reaches full thrust, accelerating away at 10gs. Here's a graphic of Dragon's abort test superimposed over the AMOS-6 failure. Things like this are the very reason that launch escape systems exist. NASA's last manned space vehicle lacked such a system entirely. And while their design for the Shuttle ultimately wasn't chosen, you know what? Lockheed's proposal didn't have one either. And it had a strong impact on influencing the final Shuttle design outcome.

Comment Re:What governmen brought to the table (Score 1) 106

SpaceX and Blue Origin would not use solids, not because there's something wrong with solids per se, but because they're not "fuel and go", which makes them expensive to reuse - and SpaceX and Blue Origin are all about reuse.

A lack of experience with hydrolox surely factors into the picture for SpaceX and Blue Origin; they'd get significantly higher payload fractions by using a hydrolox upper stage. But they're willing to accept lower payloads in order to simplify their manufacture and ground infrastructure, and in particular because the need their propellants to be storable, and storing LH for long periods is a PITA. Storing methalox is quite difficult, but nothing compared to hydrolox.

Comment Re:What governmen brought to the table (Score 2) 106

Solids really aren't that bad when reusability isn't a concern. They're very high thrust, which is exactly what you want out of a booster, and they're structurally very simple. Their low impulse and high structural mass are not particularly important aspects for boosters. Reuse of solids however gains you very little, because there's so much work in refurbishing them.

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