A related interesting fact is that small angular motions compose almost like vectors, order does not matter (i.e. they are commutative). This makes differential kinematics easier to deal with when dealing with polar or cylindrical coordinate systems.
Large angular deflections while being linear transforms, do not in general commute.
It will spoil the linear relation in your elegant expression, but a slightly better approximation for cos for small θ is
It requires very few flags to kill a story. My unstated assumption is that it will require wider participation and agreement for downvotes to do the same
GPS denial is a mixed bag. After about two years of efforts and counter-efforts, the Russians seemingly managed to build GPS receivers that are pretty resistant to jamming.
I was talking about those that are meant for hospitals. Was peripherally involved with a fledgling startup that was developing something cheap. Hospitals straightaway said noway.
They would be desirable in places with poor advanced imaging penetration like Brazil. Usually only the largest city in a state has this sort of imaging.
Strike a light in front of a parked but otherwise active fin guided heat-seeker and its freaky to watch it come alive like a lazy beagle eyeing a treat.
Indeed, Israel and the US are quite vile. I have said so many times on placard which have then been ripped apart by the Israeli police. I only made a comment about the term "carpet bombing", as that is a specific term which means something else than "wide-scale bombing".
I always loved the "white phosphorous" stuff. The meme appeared on reddit out of nowhere, and once it did it made everyone who heard it completely utterly stupid. Suddenly it's a chemical weapon, the worst sort of atrocity anyone's heard of.
The meme will never die. Skynet could be hunting down the last of humanity hiding in caves, and those humans will be crying "maybe it will just be nukes, please god, don't let the robots white phosphorous us!".
If these reasonable people knew that, then why did you have to say this? It's the dog whistle that they need so that they'll behave as expected...
White phosphorous is a way to light up the night sky during warfare. Like all warfare, it is dangerous to human life even when that's not it's direct intent... people fall off cliffs and shit while fighting (or running from it). Their deaths are no less tragic for it.
But when crackpots start screaming "they're trying to make people stampede off cliffs to their deaths!", it shows you for the very unreasonable and quite likely mentally ill person that you are.
> White phosphorous is a way to light up the night sky during warfare
Lol No. Hilariously no. The thing to use to light up night sky is Magnesium (mostly, also aluminum. nowadays specialized resins). The primary use of WP is for smoke, but it is used illegally as an incendiary munition.
For someone who talks so much about WP I did not expect this level of ignorance. Empty vessels sounds much, I suppose.
Use of WP is banned * in warfare by international treaty, on the grounds of avoiding unnecessary cruelty and suffering. There are other banned weapons, for example, dumdum bullets. *There is a specific exception made for WP, which the Israeli army habitually and illegally abuses.
No other army is known to be a repeat offender with regards to WP. It's use in an area with civilian population is strictly prohibited. Cliffs are not.
Given the number of false equivalences you have been drawing you sound like a shill.
The biggest savings for a service like GMail are going to be based around deduplication - e.g. if you can recognize that a newsletter went out to a thousand subscribers and store those all as deltas from a "canonical" copy - congratulations, that's >1000:1 compression, better than you could achieve with any general-purpose compression. Similarly, if you can recognize that an email is an Amazon shipping confirmation or a Facebook message notification or some other commonly repeated "form letter", you can achieve huge savings by factoring out all the common elements in them, like images or stylesheets.
I kind of doubt they would do this to be honest. Every near-copy of a message is going to have small differences in at least the envelope (not sure if encoding differences are also possible depending on the server), and possibly going to be under different guarantees or jurisdictions. And it would just take one mistake to screw things up and leak data from one person to another. All for saving a few gigabytes over an account's lifetime. Doesn't really seem worth it, does it?
That's why a base and a delta. Whereas PP was talking about general compression algorithm, my question was different.
In line with the original comment, I was asking about specialized "codecs" for gmail.
Humans do not read the same email many times. That makes it a good target for compression. I believe machines do read the same email many times, but that could be architected around.
These and other email specific redundancies ought to be covered by any specialized compression scheme. Also note, a lot of standard compression is deduplication. Fundamentally they are not that different.
Given that one needs to support deletes, this will end up looking like a garbage collected deduplication file system.
Large angular deflections while being linear transforms, do not in general commute.
It will spoil the linear relation in your elegant expression, but a slightly better approximation for cos for small θ is
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