251 karma · joined May 8, 2025
Flu, not so easy (and an ongoing topic of research)
What's unbelievable? That someone with a graduate degree in engineering who sends their kid to private school has a circle of friends that includes medical doctors and other researchers? Or that there are medical professionals that aren't insufferable authoritarians?
- Regulatory structure. Why can't I sue a vaccine manufacturer? Limit awards, if you necessary, but if I cant sue I cant get discovery.
- Effectiveness. The flu vaccine's effectiveness is statistical artifact. See healthy vaccine bias
- Historical effectiveness. I had a civil engineer smugly point out that his profession had ended more diseases than biology. So I looked it up. Civil engineering did more to end communicable diseases than vaccines.
- General dishonesty of the medical profession. I don't expect my Advil to be 100% safe; I don't expect my vaccine to be either. I dont expect my medical health officers to lie about it though (see mRNA and the long dismissed myocarditis risk)
You literally feel the push of the sharp needle cutting through your bone. Slowly. methodically. Half a millimeter by half millimeter every time the practitioner puts her weight on the needle.
Then, as they aspirate the marrow, you feel as if your balls are being sucked into your hips.
Then, despite the pain, I volunteered to sign up as a bone marrow donor.
Please, call me an idiot if you must, but don't explain away my distrust of vaccines with cowardice.
I call BS.
Until there was compelling evidence that antidepressants cause suicidal ideation it's safe to say it doesn't
Until there was compelling evidence that contaminated water causes cholera it's safe to say it doesn't
Until there was compelling evidence that dirty hands cause maternal death it's safe to say it doesn't
Until there was compelling evidence that lack of sunlight causes neo-natal jaundice it's safe to say it doesn't
These examples span centuries, including the 21st, that were vigorously rejected by experts
The beauty of HN is that when someone doesnt know, or is wrong, we don't assume bad intent, but explain with good intentions at heart.
It's literally in the rules
After all, off in a democracy an expert expects to be paid by taxpayers to make decisions that affect the taxpayer the expert should be, at the very least, be able to explain himself in an intelligible manner.
Thats the bare minimum of expectations. I also expect the taxpayer funded expert to provided full access to his data, notes and analysis software.
Im considered an expert in thermodynamics, materials science and E&M. The people that pay me routinely don't understand what I'm working on, but they expect me to explain myself.
But the value of exercise is that you form more capillary structure to oxygenate blood
But that isn't a mathematical expression. At best, it would appear to be energy * maximum_Carnot_efficiency (for heat engines anyway)
But it seems not to be adding very much, since Carnot efficiency depends on delta_(T). The OPs point that exergy doesn't depend on T is tautological since T has already been accounted for by the Carnot expression.
I haven't seen it in any physics thermodynamics book, and only mech eng. seem to know what it is, and then only in the US.
Faires (undergrad MIT Thermo book from the 50s) makes no mention of it as far as I can tell.
At a reasonable delta T you can get 200% efficiencies.
No, they don't. First, without defining a delta T, efficiency is meaningless (unless its a Carnot cycle).
Second, the efficiency is (depending on op. point) higher than 100%. See [1]. You can pump 20 W of thermal power with 2 A @ 4 V = 8 W
20 W of cooling for 8 W of work, or an efficiency of > 200%. This is common to all refrigeration cycles, and frankly for a puny 10C, it sucks.
[1] https://www.datasheethub.com/wp-content/uploads/2022/10/data...
And you dont get to stack Peltiers to increase COP, only to increase delta T.
Still, Peltiers are super cool and I have some ideas for their use od they get slightly better. Advances are super welcome.
Btw, his birth mother was alive until five years ago. He found her through 23 and me just months after she'd passed.
Openly disagreeing with the in-group cannot be nonchalance, almost by definition (if you don't care, why bother having an opinion?), and it can't be cowardice if the issue matters.
- I believe they're more immoral than ICE vehicles. They're existence displaces batteries for hybrids (yes I did the math)
- They're not practical for me for my use scenario. I have kids.
Well that's one way to translate "tarado". Moron would be the correct way though.
When I was in undergrad there was this 16 year old street urchin (for that's what he'd become) who'd hang out with us. He was a foster kid, and his was a life long story of abuse and neglect.
He was a nice kid too and, despite all the drugs he took, he could have been very smart.
What contrast good parents make.