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Debunking a Viral Internet Post About Breastfeeding Racism

tibit Re:Most people don't object to public breast feedi (350 comments)

Not at all. I merely pointed out that a piece of one's body can be gender-specific (sexual), no matter what function it has.

about two weeks ago
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Internet Voting Hack Alters PDF Ballots In Transmission

tibit Re:Open Vulnerability (148 comments)

So, let's see, what's better: a Linux kernel or some barely working "micro" TCP implementation on a microcontroller of some sort? I'll take linux any day, thank you.

about two weeks ago
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Debunking a Viral Internet Post About Breastfeeding Racism

tibit Re:Most people don't object to public breast feedi (350 comments)

I think that's just nitpicking. As far as everyday language use is concerned, men don't normally have breasts. It's as simple as that. Yeah, there's enough gland tissue there that can be made to grow etc., but it's mostly immaterial other than men getting breast cancer. Still, in normal, everyday use of the language, we all know that women have breasts, and men don't.

about two weeks ago
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Ask Slashdot: How To Unblock Email From My Comcast-Hosted Server?

tibit Re:First step is to collect data. (405 comments)

You've had those IP addresses for 2 years without problems so it probably is not a pre-existing issue with the IP addresses.

OK, I didn't notice that. I think Yahoo is simply overzealous and they treat all Comcast subscriber IPs as spammy.

about two weeks ago
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Ask Slashdot: How To Unblock Email From My Comcast-Hosted Server?

tibit Re:First step is to collect data. (405 comments)

Regarding the person from yahoo rejecting my email - I can confirm that's not the case. I set up a yahoo account for my self, brand new, and can't email it.

Yahoo isn't looking at whether one person is rejecting the mail, the yahoo blacklisting is an aggregate process. Most likely your IPs were used by a spammer or an open relay or an owned host before, and were source of spam reported by multiple Yahoo users. Now you've got the broken goods.

about two weeks ago
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Debunking a Viral Internet Post About Breastfeeding Racism

tibit Re:It's useless (350 comments)

There's psychology, then there's psychology. The kind of neuropsychology I've seen done produces rather decent, reproducible results, not subject to a whole lot of interpretation...

about two weeks ago
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Debunking a Viral Internet Post About Breastfeeding Racism

tibit Re:Can't draw conclusions from this study (350 comments)

One thing has to be said: Bennett is a cheapskate. $25 to pay the survey takers? Gimme a break.

about two weeks ago
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Debunking a Viral Internet Post About Breastfeeding Racism

tibit Re:Astonishing grasp of the obvious (350 comments)

I do know plenty of married couples that decided not to wear jewelry related to their marital status. They occasionally got dirty stares when they were young. They were cool enough not to give two shits about it, though.

about two weeks ago
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Debunking a Viral Internet Post About Breastfeeding Racism

tibit Re:Astonishing grasp of the obvious (350 comments)

Having had welded my first wedding ring to a bunch of initially charged capacitors in a UPS unit that sat offline, disconnected from batteries, for a week, I concur. I've had a nice round burn mark on my ring finger for months afterwards. It took 2 years for it to completely fade. I still wear the band #2, but I have a special ritual before I ever work on things that have more than a few tenths of a Joule stored in them, or have short circuit current ratings over 5A, or voltages over 48V.

P.S. The cap discharge resistor circuit had a hairline crack on a trace - apparently wide enough that the cap voltage wouldn't break down the gap. The design had redundant traces leading to an unpopulated location for a redundant cap discharge resistor. I replaced the failed one, and added the redundant buddy as was the original intent (presumably before the beancounters took over the engineering dept.).

about two weeks ago
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Debunking a Viral Internet Post About Breastfeeding Racism

tibit Re:Most people don't object to public breast feedi (350 comments)

Apart from pissing outside of restrooms being unsanitary, I do agree that we're a bit oversensitive about the so-called privates. It's a cultural thing, there's no rational reason for it, not even a moral one if one were to separate rationality and morality.

about two weeks ago
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Debunking a Viral Internet Post About Breastfeeding Racism

tibit Re:Most people don't object to public breast feedi (350 comments)

Breasts are fundamental to sexual reproduction.

Lolwut? They play no role whatsoever in reproduction. They are only useful, optionally, to nourish the newborn - long after the reproduction is a done. The optional part is kinda important: you can feed a newborn quite well using nothing but plant-derived stuff, for example. If I were ever to hear a medical doctor call breasts "reproductive organs", I'd be looking for a different one, you know. Where you got that crazy idea I can't fathom.

about two weeks ago
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Debunking a Viral Internet Post About Breastfeeding Racism

tibit Re:Most people don't object to public breast feedi (350 comments)

Breasts are most definitely not intrinsically sexual!

Sexual here is used to mean "to do with the sex or gender of the person in question". DUH that they are sexual as only the female sex has them.

about two weeks ago
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Comet Probe Philae Unanchored But Stable — And Sending Back Images

tibit Re:Black and White? (132 comments)

There's nothing colorful on a comet. It's just shades of gray. Seriously. It's literally dirty ice.

about two weeks ago
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Overbilled Customer Sues Time Warner Cable For False Advertising

tibit Re:Good for him! (223 comments)

It's real easy. It's not a big company that can't do it, because companies aren't living things and can't do anything, they are just ideas. It's their employees who don't care, but more often, simply aren't empowered to do the right thing. The marketing department can't will things to happen just so. If the people who have an influence on this process can't or won't make it happen, it doesn't happen. It's as simple as that. Corporate HR has lost the human touch long time ago.

about two weeks ago
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Comet Probe Philae Unanchored But Stable — And Sending Back Images

tibit The Philae mission is a partial success (132 comments)

At the moment, the Philae mission is a partial, or qualified, success. They'll be receiving the passive science data and imagery, but let's be realistic: they have no way of anchoring Philae to the comet, they can't drill, and any attempts at "bouncing" it are at the mercy of how much gyro range is available to keep it stable while it follows the ballistic arc - and whether it'll come down anywhere safe enough to keep itself upright. The gravity is so small that the lander could "impact" the comet upside down and it wouldn't damage it, it'd just make its orientation useless for the deployment of drilling instruments. Heck, it may be that the gyros have enough oomph to roll the Philae if it ends up upside-down, although it'd probably tumble for a while before setting in some other random orientation, possibly still a wrong one.

They have to weigh the battery life against science returns - and right now there's no battery recharging to speak of. That's the hard part of rocket science - it's not through any fault of mission design, it's simply a bad luck. So, I bet they'll keep Philae where it is up to say 48-50hr mark, and then they'll re-enable the gyros and attempt a bounce, and they'll get one shot at it due to the time the bounce will take, and the link availability constraints due to Rosetta's orbit. I really wonder if the harpoons didn't work due to insufficient contact forces and a sequencer step to shoot the harpoon not being triggered, or if it's due to a failure of the harpoon deployment mechanism itself. It wouldn't hurt to reattempt a harpoon firing once the bounce ends with a recontact.

I'm still wondering why they couldn't get the Rosetta spacecraft itself to be the lander. It's a much bigger platform, it has a proper RCS system and could easily land and take off to scout multiple locations on the comet. Not having a stand-alone lander would give enough available weight to put the instruments on Rosetta itself, and take the extra fuel to do repeated landings and take-offs. That's at least according to my back-of-the-envelope fuel budgeting, I may be way off, though...

Overall, the biggest lessons learned are about things didn't work. Any further low-gravity comet lander designs will need to use designs that include fixes for whatever didn't work this time. I really wish they did, for example, store a duplicate thruster fuel supply system on Earth, in cryogenic conditions, for the decade Rosetta was out there - I bet it'd fail on Earth just as it failed out there, and it'd be an easy thing to post-mortem. But that time has passed, so we may never know what went caused the failure of the puncture pin system...

about two weeks ago
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Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

tibit Re:My useless(?) WD anecdotes (142 comments)

Pray tell, what has a firmware bug got to do with the meaning of a power cycle counter, otherwise that in this particular case you can't rely on a faulty counter? Let's not deflect attention to strawmen.

about two weeks ago
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Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

tibit Re:My useless(?) WD anecdotes (142 comments)

Load Cycle Count and Power Cycle Count aren't the same thing.

about two weeks ago
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Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

tibit Re:My useless(?) WD anecdotes (142 comments)

I'm calling it stupid because if you don't know anything about the time between the power cycles, you can at best assume that the power cycle count is a low-quality proxy for powered hours.

For any claim that the number of power cycles itself is a predictor of failure, you'd need to, you know, power cycle a bunch of drives at various rates until they die, and see if merely power cycling it more often makes it fail faster. Only in such conditions would the power cycle mean anything. Otherwise it's stupid and let's just stop with the stupidity, okay?

about two weeks ago
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Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

tibit Re:My useless(?) WD anecdotes (142 comments)

12 Power Cycle Count

Are people seriously just that stupid? It's the count of how many times you powered it up. It has nowhere to go but up. It's not an indicator of any failure, except to the extent that power-cycling the drive can have an effect on its lifetime and/or reliability. The article also pretends like this was some sort of a "drive quality" indicator. I think people somehow can't parse what simple words mean anymore :( SIGH.

(I'd call the parent a troll if the article didn't perpetuate this same stupidity. Maybe the article was a troll too.)

about two weeks ago
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Study Shows How Humans Can Echolocate

tibit Re:I do this with water temp. (136 comments)

Sure, but with changing viscosity the sound propagation in the liquid changes - especially that the quality of the resonance in the liquid scales with viscosity (viscous damping!). The speed of sound in the liquid changes too, but the change in the 0-60C range is about a factor of magnitude smaller than the change in viscosity.

about two weeks ago

Submissions

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MRI Magnets Cause Nystagmus

tibit tibit writes  |  more than 3 years ago

tibit writes "In an interesting twist on "it's so old it's new again", Johns Hopkins researchers led by Dale Roberts found what must have been causing much confusion for doctors the world over: strong external magnetic field can stimulate the semicircular canals, causing vertigo and nystagmus (pendular eye motion). It's a textbook case of Lorentz force in action: our angular rate gyros, the semicircular canals in the middle ear, filled with endolymph, have a ionic current flowing across. In magnetic field, the current produces a force that pushes the lymph along the channel, causing stimulation of the cupula — a pressure sensor at the end of the channel. This is interpreted by the brain as rotation of head in space, and causes a nystagmus that's supposed to stabilize the image on the retina. Of course the subject is laying down and not spinning in space, and the mismatch between inertial measurements coming from the ear and real situation causes vertigo."
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