Submitting this apropos of nothing, and for no discernible reason:
> A Keynesian beauty contest is a metaphorical beauty contest in which judges are rewarded for selecting the most popular choices among all judges, rather than those they may personally find the most attractive. This idea is often applied in financial markets, whereby investors could profit more by buying whichever stocks they think other investors will buy, rather than the stocks that have fundamentally the best value, because when other people buy a stock, they bid up the price, allowing an earlier investor to cash out with a profit, regardless of whether the price increases are supported by its fundamentals and theoretical arguments.
> can’t remember ever meeting anyone who chose vi over vim
As a sysadmin, I prefer a basic "vi" as in most cases I want quick open/edit/close and don't need fancy colours and such. (I.e., vim.tiny on Deb/Ub rather than vim.basic.)
My favorite example is the introduction of speed limit on some accident-ridden stretch of the Autobahn north of Berlin. After introducing the speed limit, the accident numbers went down dramatically. What did the local administration decide? Remove the speed limit again -- cause there were no accidents anymore!
> I always thought that the reason zfs did its extensive CRC checks was primarily to detect data corruption while it was in RAM or over the network, with a side effect that in the rare cares that data on disk got corrupted without the drive detecting it because the CRC was still valid, it'd also be spotted.
Nope, it's always been about on-disk bit rot.
First off: drive firmware has been known to return the wrong LBA data. The OS asks for 123, the drive reads 234—and verifies its drive-level CRC, which passes—and sends it up. Application gets a bundle of bits that's not correct. With ZFS, it expects a certain checksum from that part of the tree/file, and so the LBA 234 gets returned it will not match the checksum that is for 123.
Next, if you have RAID-1, then if the drive has corrupted data, if you don't have higher-level FS checksums, how do you which mirror has the correct data? They're different, but which is correct. With ZFS you know which block has the correct checksum, return that data to application, and then use the correct data to correct the wrong one.
I don't know how much better modern drives (and SSDs) have gotten[1], but as someone who started digital hoarding in the mid 90's, on-disk bitrot used to be a massive problem. The amount of my video, audio and pictures that suffered damage was palpable. ZFS offering to fix it was massive selling point and the time and based on personal experience, it delivered.
ZFS also lets you specify number of copies on a single disk. This sounds a bit weird, but as drives suffer block failures far more often than total failures, it's actually surprisingly useful in some situations.
[1] My suspicion is significantly, as storage sizes are now multiple orders of magnitude larger and errors per MB can't have scaled up linearly to match.
> The US still has a fairly robust network of VOR's / VOR with DME / VORTAC stations. Good for navigation, but there's no timing component, beyond what's inherent in how they operate. Admittedly, that'll never be of use outside aviation […]
I'm aware of the FAA's MON, Minimum Operating Network.
Exactly: that doesn't help boats. Or people in cars. Or farmers:
> The chimp warfare described by this study, and previously by famed primatologist Jane Goodall, includes all the behaviors that we as humans consider to be the very worst: killing, torture, cannibalism, rape, and perhaps even genocide. The adult males of a social group, which usually number about 30 to 50 in size, daily patrol the edge of their group's territory. They will often kill any male or young chimpanzees they find, sometimes eating or physically brutalizing their victims in a manner that some researchers liken to torture. In some instances, one group will "invade" and annex the territory of another, killing all but the adult females, who are forced to incorporate into the dominant group. The idea of chimp genocide may sound strange, but they are one of only three animals that has been observed wiping out entire social groups. The other two are wolves and humans.
Funny, I knew about the chimp wars but totally forgot until you mentioned it. Seems like I was biased in favour of all animals, lol.
I'll search for Goodall's literature to know more. It does sound to me that cognition and self awareness is a continuous function in the sense that there is no discrete threshold in which morals emerge.
Wolves are a very interesting example too, but I also remember something about the concept of "alpha" being discovered only in captivity wolf packs. Also need more reading.
Considering chimps and humans share - depending on source, 95-99% of DNA, I'd be much more willing to consider them closer to humans than animals. In fact, there are - biologist - voices who argue that they should be moved to the homo genus.
> A Keynesian beauty contest is a metaphorical beauty contest in which judges are rewarded for selecting the most popular choices among all judges, rather than those they may personally find the most attractive. This idea is often applied in financial markets, whereby investors could profit more by buying whichever stocks they think other investors will buy, rather than the stocks that have fundamentally the best value, because when other people buy a stock, they bid up the price, allowing an earlier investor to cash out with a profit, regardless of whether the price increases are supported by its fundamentals and theoretical arguments.
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