Not a fan of the delivery, but, I think its an interesting point, and that both movements have a similar idea at their core, that life begins at birth / hatching.
I think the parallels are interesting.
but if we go there we need to ask a more fundamental question. (to avoid a misinterpretation of what i am saying, i'd like to make clear that i am not vegan or vegetarian, i do eat meat and eggs)
the question on where life begins is rather irrelevant until we answer the question of where the life of a chicken is supposed to end.
if the possibility that life may begin at conception is going to be a consideration when destroying eggs because they are male, then the same consideration must be made when we chose to eat eggs in the first place.
we can't argue that eating eggs is ok, but destroying them is not.
consequently, as long as we eat eggs the question of when life begins is not really relevant.
the relevant questions are: can we avoid destroying/wasting those eggs at all (can we eat them?) and if ee have to destroy them, what is the most humane way to go about it? my intuition suggests that destroying the eggs is more humane than letting them hatch
That's not quite right. These male chicks are from fertilized eggs. They are the ones that, had they been female, would have become the next set of egg layers.
The eggs we eat, at least the factory farmed variety, and most / all from commercial egg farms are not fertilized. Hens lay whether they've known the touch of a rooster or not. [0].
you are right, yes, the eggs from big producers are not fertilized. i forgot about that detail. but depending on where you are there is a good chance that you can get fertilized eggs as well, or can't be certain that they are not fertilized. nevertheless it does change the equation, because it would be possible to ensure that only unfertilized eggs are consumed. thank you for the correction.
It's not a terrible mistake. A terrible mistake would have been having such power available on ports that even a reasonable person might short out by innocently connecting a USB C cable between them.
A couple 5.1k resistors add about $0.00001 to the BOM cost. The terrible mistake is on the designers of devices who try to forego these.
It's really not the BOM cost that drives these decisions but the assembly cost of adding placements. Time on the assembly line is very valuable and doesn't have a simple / clean representation on a spreadsheet. It's dependent on the market and right now assembly line time is worth a lot.
That is exactly the reality. I work in a place where we build HW. The resistor costs almost nothing. But installing it, having it in stock, making sure the quality of yet another component is correct, eventually managing another vendor, all costs. So much, that the cost of a resistor we put a value of some cents (up to ten) even when the part itself cost so little that the software has problems tracking it.
Except that connecting 5V to 5V does not cause a short circuit. No current will flow without a voltage difference. If there is a difference, the capacitors in one of the power supplies will charge up to the same voltage and then current stops flowing again.
That would be true if both sides were exactly 5.0V, but they're not. There's a 5% tolerance, from 4.75V to 5.25V, and in practice you will see chargers often run "5V" at 5.1V intentionally, to account for resistive loss in the charging cable. If you accidentally connect your "5V" device to the host's "5V" you may find that the host simply disables the port, which has happened to me more than once. So no, you can't just blindly connect them together.
What do you mean by "blow"? There's often a polyfuse which will trip, and needs to cool down to reset. I haven't seen a normal fuse but I believe it's possible. Efuses are also common, to allow the system to automatically reset as soon as the fault condition is removed.
It's unlikely that anything will be damaged, but the device likely will not work until the issue is resolved.
No it will not. Have done it thousands of times. No no no. You can downvote all that you want, but you will still be wrong. It will happen nothing. Period. If you do not know about it, educate yourself before downvoting and commenting about fuses.
Because of all these supplies work with transistors they do not act as a load to the other. Is like if the 2 had a diode in the output (in fact they do have one, but not directly in the output).
This is my typical experience in HN lately, is getting full of people with absolutely no idea what they talk about, and are constantly downvoting good comments.
>Because of all these supplies work with transistors they do not act as a load to the other.
This is utter nonsense, Ohm's law doesn't magically stop working with a transistor. I do know about this, I've designed power supplies and USB devices, and I've destroyed more than a few components accidentally by connecting two switching supplies together. Yes, there will be current flowing, and yes, sometimes a fuse or breaker will trip, I have experienced this many times, and just because you haven't doesn't mean it doesn't happen.
>Is like if the 2 had a diode in the output (in fact they do have one, but not directly in the output)
Sounds like you're referring to either ESD protection diodes, or flyback diodes, neither of which do anything in the case of two similar but unmatched power supplies.
I'd advise you to get a degree in engineering (as I have), or do some serious studying, as this kind of uninformed discussion is not productive or helpful to anyone, it's just noise.
Wow. You really are interesting person. You obviously have no idea what you talk about, but keep insisting…
Man… you are really a nice case.
Let me make a last attempt, even when I know it will fail:
1) “Ohm's law doesn't magically stop working with a transistor”
Ohm’s law works only with linear components, is a linear relation. So NO it does not work in a transistor or a diode. No it doesn’t. No because of your magic ignorance, but because they are not frigging linear! Go study some physics.
2) No, I was certainly not referring to ESD diodes, but the rectifier, at the end of any SMPS. Some may have a last stage linear regulator, in that case the diode is part of the juncture of the output transistor. At any rate, ANY wall mounted power supply, and 99% of all supplies in the world, when the output is higher that the target voltage will just shut down. GO TEST IT AND STOP with your nonsensical replies.
BTW: the 1% of supplies that do regulate down are called “4-cuadrant-supply” are much more complicated, and expensive, and makes no sense to use in a USB charger.
I don’t care which degree you have, if you really do, and was expensive, ask for your money back. In case is not a degree in prompt engineering…
I know what I'm talking about, I am a professional working in electrical engineering. Please don't insinuate that I don't, it's unnecessarily insulting.
If you have two power supplies at different voltages and connect them together, there will be a finite resistance through the cable and Ohm's Law applies. Current will flow. With a low resistance and big enough voltage difference, there will be a significant current, and it can trip the supply. This is not difficult to achieve.
The rectifier you're referring to is the flyback diode in that case. But now as you've said yourself, the power supply will shut down if the voltage coming in is too high, which is frequently due to either a polyfuse or an efuse tripping. So it sounds like you're just arguing to argue, while actually agreeing with my point. You said "nothing will happen", but if one shuts off, something has happened.
I don't need to test this, I have done it. I also have quite literally thousands upon thousands of other engineers, books, universities etc backing me up, and you do not. Connecting two USB supplies together is a bad idea and will likely result in one switching off. Don't do it.
Either way, I'm done trying to convince an amateur. Feel free to do what you want.
I don’t know at this point if you have fun trolling around or what.
“If you have two power supplies at different voltages and connect them together, there will be a finite resistance through the cable and Ohm's Law applies.”
That is an error that only a person with minimal knowledge from TV shows can do. That is absolutely bot true for regulated power supplies, SMPS or Linear, becauae (even if the later is called linear) they are not linear. So no, you cannot apply Ohm’s law.
“The rectifier you're referring to is the flyback diode in that case. But now as you've said yourself, the power supply will shut down if the voltage coming in is too high, which is frequently due to either a polyfuse or an efuse tripping”
Noooo I’m talking about the diode at thr end of any SMPS, buck, boost, fly-back or whatever type, or even a linear regulator. Is about how a regulated power supply works: as the voltage goes up in the output, it shuts down, stops the output current, in an intent to liwer the voltage. There is no fuse in 99% of supplies out there, because they have active protection. Is called a transistor, not a polyfuse.
“I also have quite literally thousands upon thousands of other engineers, books, universities etc backing me up”
That is what you think, but you are wrong. Sorry mate. If you would just go to a lab and put 2 power supplies in parallel, like I do pretty much daily, you will see you are wrong.
You are the most ignorant, obstinate and arrogant person I’ve seen in HN… and here is full of it. I’m 100% sure you studied CS in a medicre university, work as sw dev, and think you can talk with an EE. You say you work with electrical stuff, but your other posts reveal you are a SW dev. Obviously you are a liar, and trying to be right when you are sooo obviously wrong.
I do care what you do, because with such an arrogance and incompetence together, you are going to get somebody hurt or killed. Please start studying and stop being so stubborn when you are just wrong!
akshually (hehe sorry couldn't resist) ohms law keeps working, its just that the resistive component in the formula varies according to the applied voltages because of active components but ohms law continues to obey the math that results. very trivial observation tho, so downvote if you must lol
Important context from the article includes things such as: unspent funds remain available for future projects; the works were predicted to have a devastating impact on local wildlife, such as killing an estimated 6,000 dolphins; this is not a partisan issue, as there have been outspoken Dems and Republicans on either side; also devastating impact to the local fishing industry was predicted, prompting a $400m lawsuit to curtail the project.
> unspent funds remain available for future projects
Not according to the article?
> Its collapse means that the state could lose out on more than $1.5 billion in unspent funds and may even have to repay the $618 million it already used to begin building.
> The Louisiana Trustee Implementation Group, a mix of federal agencies overseeing the settlement funds, said that “unused project funds will be available for future Deepwater Horizon restoration activities” but would require review and approval.
The article doesn't even go into this, but the primary cause of the issue is not climate change, but natural processes. The Mississippi river used to be undammed and untrammeled; envision a hose whipping around (in geological terms) spraying tremendous amounts of sediment over a very wide area.
Now, the Mississippi is tightly controlled. Most areas are no longer getting that sediment. So natural subsidence and erosion processes mean that "land" is sinking back below the water.
The solution (for this project) entailed reconnecting the Mississippi to the area, restoring sediment deposition. But this does have a lot of negative effects as well, because it impacts salinity levels and of course the Mississippi is also full of fertilizer and other substances.
I know nothing about Landry and have no opinion on him or those statements specifically, but I'm familiar with the kerfuffle over the Bonnet Carré Spillway that allegedly devastated Mississippi fisheries, and obviously it has some impact. I suppose he overstated them?
The claim is that opening the spillway decreased salinity in the Mississippi Sound and caused substantial hardship for Mississippi fishermen. They want it opened less often, not more often. There was a lawsuit against the Army Corps of Engineers over it. It’s hard to see why Mississippi would care at all if it weren’t true.
> With salinity levels bottomed-out as a result of the overwhelming freshwater intrusion from the Spillway, an estimated 95% of the estuary’s oyster population was wiped out. 2018 remains the last time a wild oyster was harvested from Mississippi waters – once among the most productive oyster fisheries in the world.
> Data provided by MDMR shows the seafood industry along the Coast, which in many respects was both the first and primary early-economic driver of the region, suffered revenue losses exceeding $210 million in 2019 alone.
Her broody her choice.