lutorm

17 ms·

151.
by lutorm 4y ago
All pegs are solid until they break, though. Unless the two currencies are affected exactly equally by all events and treated exactly equally by everyone, there is no single price that won't eventually be "fundamentally mispriced&
152.
by lutorm 4y ago
Yeah, this is what I was thinking too. If there was a theory by which you could predict the outcome of the market, the mere presence of such a theory would affect the market such that the theory no longer applied. Sort of a Heisenberg Uncer
153.
by lutorm 4y ago
Indeed. I find Marcus Aurelius' "Meditations" to be a particularly vivid proof of this. (Although I don't know what it's like to be Emperor of Rome, a lot of his concerns seem entirely commonplace today.) Begin eac
154.
by lutorm 4y ago
That was not the admin, it was BO. While the award was challenged, the government could not expend any funds on it.
155.
by lutorm 4y ago
_Everything_ is evolutionary, if you think hard enough. But I think you're discounting the step between "reusable rocket research by NASA in the 70s" and actually building a production system. "SpaceX's research is
156.
by lutorm 4y ago
It was also my impression that holders of employee stock are not counted in the same way as normal shareholders, hence the tendency to limit third-party transactions of RSU shares. But I might be mistaken.
157.
by lutorm 4y ago
He is absolutely not merely the "public face" of SpaceX, not even close.
158.
by lutorm 4y ago
Delta Clipper landed 25 years ago, too. Vertical landings of suborbital rockets aren't anything new. Reuse of orbital rockets are. Blue Origin has accomplished practically nothing compared to SpaceX, even if they "landed a rocket
159.
by lutorm 5y ago
even the vast majority of ethical academics are being pushed into a direction that is detrimental to longterm scientific progress, in particular short term outcomes instead of longterm progress I agree. The egregious fraud is just the hig
160.
by lutorm 5y ago
Yup, the retroactive valuation updates for private companies can really screw you over.
161.
by lutorm 5y ago
Well, 100% of the emitted radiation hits the ground in terms of total power, but the radar is looking for the _closest_ reflection, which is some relatively small solid angle straight down. It doesn't change your conclusion though, tha
162.
by lutorm 5y ago
Starship _will_ be reusable. It will probably be a while until that's reliable so they'll burn through a bunch of engines pretty quickly until then.
163.
by lutorm 5y ago
I don't understand, surely there's a giant difference between posting on reddit/facebook and posting on a community-driven BBedit board, even if they're both "web-based".
164.
by lutorm 5y ago
This happens with armor piercing shells hitting tanks or other armored vehicles, too. And even if they don't penetrate, they can still generate spall from the inside of the armor that's still deadly. (This was at least true with ~
165.
by lutorm 5y ago
I don't think you read my comment correctly...
166.
by lutorm 5y ago
I know, my point is that "80s space telescope" doesn't mean it's something super old that's not in use today...
167.
by lutorm 5y ago
I got this spiel from someone, don't remember who now. When they told me I needed to call to cancel, I responded "If you can process my subscription online, you can process my cancellation too. If you continue charging my credit c
168.
by lutorm 5y ago
Lol, Hubble is a "1980s space telescope". It was launched in April 1990....
169.
by lutorm 5y ago
Sure. But if that's your position, you can test targets at lower orbital altitudes where the debris will decay far faster.
170.
by lutorm 5y ago
You're referring to the "list of airliner shootdown incidents"? It definitely has the Iran Air flight.
171.
by lutorm 5y ago
The only problem is that it limits the talent pool and to whom you can offer your services. You don't have to interact with the military-industrial complex, only the US State Department.
172.
by lutorm 5y ago
If lead from avgas was an acute problem, literally everyone who lives near GA airports would have high lead levels. I've not heard of such a situation, though. I think that evidence points to plenty of cases of lead poisoning from lead
173.
by lutorm 5y ago
The difference in operational regime is true, although it's my impression that automobile engines are pushed through some very severe tests as part of their development. For example, this movie, https://youtu.be/GNPB3Rt
174.
by lutorm 5y ago
Yeah flying clubs and/or experimental aircraft are the way to go, cost wise. There are some complications for learning to fly that way, but it can be much cheaper. We estimate the hourly cost of operation for our Sonex ( https:/
175.
by lutorm 5y ago
Thanks for those numbers. As a contrast, the lead content in lead-based paint can be up to 50% by weight for really old paint, down to 0.5% before lead was banned. A single house full of old lead paint can easily contain many kg of lead.
176.
by lutorm 5y ago
It's pretty funny to argue that "government action is required" when pretty much the reason that aviation piston engines largely are still based on designs from the 50s is precisely that the government will not let you use a
177.
by lutorm 5y ago
To somewhat expand on the other answers: The only reason there are cars that "require 93 octane but can run 87 with lower power" is that they have knock sensors and ECUs that can limit ignition timing to avoid knock. This is a sop
178.
by lutorm 5y ago
I thought 100LL was basically only made in one refinery? Or maybe I'm misremembering and it's TEL that's only made in one factory, worldwide.
179.
by lutorm 5y ago
I think at least all models of the Cirrus, one of the best selling general aviation planes right now, require 100 octane gas. To be clear, none require leaded fuel, per se, but until this year there was no approved unleaded 100-octane fuel.
180.
by lutorm 5y ago
Well, plus the fact that a new aviation engine runs $30-60k, which is about what an old, small, airplane is worth. It just doesn't make economic sense to replace those engines, you're effectively just trashing those planes.

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