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Comment: Re:here is the draft set of possible options (Score 1) 289

by yet another SanTiago (#48750583) Attached to: Extra Leap Second To Be Added To Clocks On June 30

> My favorite time scale is POSIX. They define a day as precisely 86400 "seconds". Obviously a POSIX second is not the same as an SI second.

That is not correct. POSIX speaks about SI seconds, it just specifies that 'unix time' is *approximate* number of (SI) seconds from the start of the epoch computed by a formula from date/time. When a leap second happens, the difference of this approximation from the exact number changes by one second and unix time experiences discontinuity (leap backwards).

Comment: Vertical integration (Score 1) 398

Seems like many peering conflicts are related to excessive vertical integration of some providers. Verizon is currently both tier 1 provider and consumer ISP. Suppose it would be split to Verizon1, tier 1 provider, and Verizon 2, tier 2 consumer ISP. Verizon1 would be one of several upstream providers to Verizon2. What wold happen in such case if there is such kind of peering conflict between Verizon1 and Lever3? Verizon2 would immediately change its routing in a way that traffic between Level3 and Verizon2 would go through another upsream provider of Verizon2, which would threaten potential revenues of Verizon1 from Verizon2, therefore Verizon1 would have much stronger incentive to promptly solve the dispute.

Comment: Re:Stay Home (Score 1) 351

by yet another SanTiago (#46040347) Attached to: Fighting the Flu May Hurt Those Around You

Socialism is an economic system where the state collects taxes to fund things like social programs, that allow people to do things like not work when they're sick without fear of, for example, starving to death.

Well, not really. Classical definition is that socialism is an economic system where means of production (i.e. capital) are publicly owned and managed (e.g. by the state or public cooperatives), while capitalism is an economic system where means of production are privately owned and managed. But press often mixes up socialists (who prefer socialism) and social-democratic parties (who prefer capitalism with socially sensitive regulations) and often uses 'socialists' as a shorthand for 'social-democratic parties'.

Comment: Re:evils of sugar (Score 1) 157

by yet another SanTiago (#44540101) Attached to: Study Ties High Blood Sugar To Dementia

Rabbit starvation is unrelated by avitaminosis or missing essential acids (that would be more long term problem). It is caused by acquiring your energy mostly from proteins (i.e. you have to cut both fats and sugars to get it) and accumulation of excessive toxical byproducts of protein catabolism - proteins are not a good energy source for humans.

Comment: Re:Has he thought this through? (Score 4, Informative) 470

by yet another SanTiago (#44058303) Attached to: 2 Men Accused of Trying To Make X-Ray Weapon

The inverse-square law only holds for something that radiates in a radial pattern.

More or less everything radiates in a radial pattern (has spherical wavefron) and is subject to the inverse-square law. Even lasers have some divergence. Better focus (by e.g. reflectors) would give you lower angle of divergence and therefore higher initial power density, but that is all.

x-rays are of a longer wavelength than visible light,

Definitely not. X-rays have significantly higher frequency and therefore shorter wavelength (380-740 nm for visible light and 0.01 - 10 nm for x-rays).

Comment: Re:"Not widely inplemented" (Score 1) 338

by yet another SanTiago (#43659025) Attached to: BT Begins Customer Tests of Carrier Grade NAT

> Sad jokes aside - why aren't they implementing NAT64

NAT64 is generally more restrictive for IPv4 than common NAT, while does not have much advantages (if compared to IPv4NAT together with IPv6).

But there are other options like MAP-E, which solves both IPv4 exhaustion and IPv6 deployments with advantages (compared to CGNAT) for both users (better control over NAT) and ISPs (just stateless and easily scalable gateways).

We warn the reader in advance that the proof presented here depends on a clever but highly unmotivated trick. -- Howard Anton, "Elementary Linear Algebra"

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