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Comment: Re: Just what the Moon always wanted (Score 1) 97

Actually, it is pretty much accepted from what I understand that the Moon had several influences on the rise and development of life on this planet, from (among others) stabilizing our spin, to moderating the seasons, deflection of large asteroids, and even to the development of optic cones in addition to rods (or rods in addition to cones, I forget which), etc.

I think that it was Asimov that pointed out that our Moon follows a fully concave path around the Sun, i.e. never travels backwards, and in his opinion that defined us (for him) as a dual-planet system.

Comment: Re: Just what the Moon always wanted (Score 1) 97

In order to account for binary systems, I generally look at the central axis of rotation - if it's inside one of the bodies, that body is the 'primary' - IE a planet, sun, whatever. If it's outside, then it's a double system.

So if the moon were located about 20% further from Earth, then you would consider the Earth-Moon system a binary system?

Comment: Re:Cooling (Score 1) 146

by dotancohen (#49342845) Attached to: First Nuclear Power Plant Planned In Jordan

Hi neighbor! I've been to Aqaba though I haven't dived there. You should know that as an Israeli, I'm very happy to see Jordan building a nuclear power plant. We (humans) need _clean_ energy, even if it is more expensive than burning carbon. And anything that advances the Jordanian standard of living is good for the entire area, especially considering what is happening on Jordan's northern and eastern borders right now.

Comment: Re:Are the CAs that do this revoked? (Score 1) 133

by dotancohen (#49331039) Attached to: Chinese CA Issues Certificates To Impersonate Google

Or at least their certs removed from valid CA Root lists that, for example, Mozilla uses. If not, why not? A trust has been breached.

The truth is that users have no way of knowing which of the tens of certificates included in the browser to leave and which to remove. This Super User question remains without a satisfactory answer, even as browser cert issues pile up almost monthly:
http://superuser.com/questions...

Comment: Re:Low gravity (Re:Stupid.) (Score 1) 111

by dotancohen (#49306615) Attached to: Giant Lava Tubes Possible On the Moon

Good question. According to this guy, both Mercury (no mention if Redstone or Atlas) and Gemini broke 7 g:
http://space.stackexchange.com...

I would imagine that the Gemini curves looked something like g = t + sin(t) as they had real pogo problems with the Titan rockets. If you find an actual graph, please post it!

Comment: Re:Low gravity (Re:Stupid.) (Score 1) 111

by dotancohen (#49304397) Attached to: Giant Lava Tubes Possible On the Moon

The low gravity of Moon would allow the elderly (and other infirm) to remain mobile for many years after they would've become wheelchair-bound on Earth.

In order to enjoy 0.3 g on the Moon, you need to suffer 3+g for a good ten minutes leaving Earth. I'm not sure that the elderly or infirm will stand for that.

The Saturn V's actually were one of the slowest-accelerating human-rated craft to ever launch, and they hit a peak of 40 m/s^2, about 4 g, at MECO 1:
http://history.nasa.gov/ap11fj...

Comment: Re:It's been explained (Score 1) 29

by dotancohen (#49290443) Attached to: Microsoft Blacklists Fake Finnish Certificate

He made a very good point. The truth is that users have no way of knowing which of the tens of certificates included in the browser to leave and which to remove. This Super User question remains without a satisfactory answer, even as browser cert issues pile up almost monthly:
http://superuser.com/questions...

Comment: Re:Selfies are just a logical extension.... (Score 1) 183

by dotancohen (#49215805) Attached to: Major Museums Start Banning Selfie Sticks

The odds of another tourist stealing your camera when you ask them to take a picture is pretty much 0%.
The odds of a someone (especially a poor local) who asks YOU if you would them to take a picture of you
stealing your camerais pretty much 100%.

My country (Israel) is full of tourists, and when I see them taking turns photographing each other I offer to photograph the group. I've never stolen a camera, and others do as I do without stealling cameras. I suppose that your advice might be culture-dependent.

This is the same advice I give my kids. If you get lost, don't
wait for someone to approach you, instead walk up to the first person you see and ask for help. Most people
are normal law abiding citizens, if you play the odds and pick someone randomly then your chances of getting
a criminal are very small. If instead you let them approach you then they are picking you which makes the
odds of them being a criminal considerably higher.

That is good advice for kids, and I will in fact start giving it.

Comment: Re:ABOUT FUCKING TIME! (Score 1) 765

by dotancohen (#49204565) Attached to: Ubuntu To Officially Switch To systemd Next Monday

You are blaming the wrong person, if something like Gimp decided to interface with systemd, its the Gimp developers.

I'm not placing blame, and you are right that it would be Gimp devs who would be responsible for including such a dependency.

In any case, the assertion that Gimp depends on systemd seems to be rumour anyway. I hope that my GP post gets modded off the page, I have no way to retract it.

Comment: Re:ABOUT FUCKING TIME! (Score 1) 765

by dotancohen (#49204555) Attached to: Ubuntu To Officially Switch To systemd Next Monday

In a hurry? Systemd is almost five years old, distributions have now *years* of experience integrating it.

Correct. Distros typically integrate software, especially system-critical software, at the beginning of a release cycle. We are now nearing the _end_ of the Ubuntu 15.04 release cycle. I have no problem with including systemd. I do find it unusual that such a critical system component is being swapped out so late in a release cycle. It should have happened three or four months ago for Ubuntu 15.04, or in two months from now for Ubuntu 15.10.

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