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nBodyProblem

@ nBodyProblem @lemmy.world

Posts
8
Comments
349
Joined
3 yr. ago

  • Sexual abstinence make sperm performance deteriorate, due to increased DNA damage and oxidative stress, in people and animals

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  • Yup some Daoist secs historically believed semen contains life force. Via “retention of the semen”, a man could maintain his vital life force and slow aging. However, having sex would generate life force. So you could extend your life by having sex as much as possible while controlling how often you ejaculate.

  • Coffee ☕

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  • That’s absolutely false. I have personally tested a range of different steep times and the difference in taste is obvious. If you can’t taste the difference your taste buds must be fried or something.

    Pressing down on the piston does not provide a meaningful amount of pressure; this has been proven by people instrumenting aeropresses which provide more back pressure than an espresso. Extraction is objectively time dependent, it has been extensively discussed and really isn’t up for debate at all.

  • Coffee ☕

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  • You are supposed to wait a few minutes before plunging and decanting French press though. If you are just pressing it and serving your French press coffee must be absolutely terrible.

    A decent drip maker with a timer will make better coffee than you are making and also be less work on top of it. Wake up to fresh hot coffee, done

  • The King's Art

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  • Okay? How is that relevant?

    Basically nobody in the current era is suggesting ethanol as an alternative to any of the things you are mentioning, and realistically ethanol is not being used as a primary fuel source. Most cars can’t even take E85 without modifications. It’s used as a fuel additive, for which is has significant public health benefits, and for industrial uses like a perfumery ingredient or a solvent

  • The King's Art

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  • It’s valuable for reducing smog and makes great fuel for performance cars

  • Harvard Places Math Professor Martin Nowak on Paid Administrative Leave Over Epstein Ties

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  • He certainly has tenure:

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  • Lamborghini Miura and Mercedes 300SL Gullwing both have it beat IMO

  • Scientific unprogress...

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  • Also, it’s engineers who land robots on other planets, not scientists

  • Singles are in your area!

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  • Man you seem to be very negative about this.

    I guarantee you that most tourists don’t even leave the rim of the grand canyon at all. They walk around the visitors center for an hour and go home. Go more than 1000’ down from the rim and it’s not particularly crowded at all.

    I can’t comment on Europe, like the previous poster—America has far more wide open wilderness than Europe does in general—but if in the USA there are still countless places where you can backpack for days without seeing a single person. There are also plenty of easier hikes with beautiful views that only see a few visitors a day. Just need to put in the footwork to find them. You won’t find them by staying at home and complaining about other hikers.

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  • Well, they are half human so their human half’s genetic memory drives them to swing their arms unnecessarily

  • Dirt Man

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  • And wouldn’t you say the opposite of bearlandia is not-bear-landia?

  • Male Birth Control Pill to Stop Sperm Production Passes Safety Test

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  • Male birth control has to be safer and have fewer side effects than letting women carry the burden of birth control.

    I mean, I don’t think this is such a high bar to pass.

    Pregnancy is bad but I’d argue the consequences of 18 years of unwilling parenthood far outstrips the consequences of 9 months of pregnancy. The consequences for those 18 years impact both parties.

    Furthermore, men have almost zero agency of what happens in the case of an unintended pregnancy. A man can’t say, “this would ruin my life, I am going to choose not to have the baby.”

    That makes the risk quite high for a man, IMO, and the only way to take agency over that risk is male birth control.

  • An "unimaginable sum:" Trump's Big Beautiful Bill would appropriate $200 billion to ICE

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  • To be fair, right around 50% of us are vehemently opposed to this sort of thing. Far from all America

  • First electric passenger plane lands at JFK in milestone flight. Travels 110 km costing $8 in fuel.

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  • Agreed. A plane that can do 200ish knots for a few hours could hit a nice sweet spot for a lot of routes

  • First electric passenger plane lands at JFK in milestone flight. Travels 110 km costing $8 in fuel.

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  • I can’t comment for their engineering team, but usually open props are more efficient because any reasonably sized duct constrains prop diameter. Increasing prop diameter is the best way to improve efficiency. Ducting a very large diameter prop comes with a large structural and weight penalty.

    Generally speaking, the only time ducts buy their way on is when they are also needed for bystander protection.

  • First electric passenger plane lands at JFK in milestone flight. Travels 110 km costing $8 in fuel.

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  • It’s absolutely not impossible. Airplanes are more efficient than drones, and efficiency grows with scale. Drones fly. Of course an airplane can do the same.

    The problem is one of speed and range. The best form of propulsion we have for electric airplanes is the propeller, which has a lower top speed potential than a turbofan. The energy density of batteries is also lower.

    Realistically, an electric airplane will have reduced range and speed compared to a modern jet.

  • First electric passenger plane lands at JFK in milestone flight. Travels 110 km costing $8 in fuel.

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  • There are a lot of other factors. For example, electric motors with propellers are far more efficient than turbofans

    A propeller driven airplane will also be substantially slower than a turbofan one, allowing for unswept wings and better aerodynamic efficiency

    In reality, battery powered passenger planes aren’t impossible but they will definitely have a shorter range and slower speed. They are realistically only suited for regional routes.

  • The three musketeers never use muskets

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  • Since when could you hold a musket on your belt?

    They typically had barrels over three feet long, with a total weapon length over four feet.

  • It's interesting that gun rights were sold on the basis of "resisting unlawful government." They seen to have caused and supported unlawful government.

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  • Guns also are not manufactured clandestinely en masse, anywhere, because it takes a lot of precise industrial machining to do at scale. They are not like sex or weed that are impossible to ban, when you stop manufacturing them for nonsense reasons, they stop circulating and criminals stop being able to get their hands on them.

    This is false. There are multiple Latin American countries where street gangs have been manufacturing reasonably sophisticated all-metal submachine guns at scale in clandestine factories for over a decade. Even prior to the 3d printing boom, open bolt submachine gun were fairly simple for an individual to manufacture with common hand tools, and quantities scale rapidly with improvised tooling and readily available machines like benchtop lathes.

    With 3d printing, it has become even more accessible. Printers can be used to manufacture tooling in addition to parts, and the DEFcad community has been remarkably resourceful in developing new methods utilizing 3d printers. Everything from electrochemically etched, rifled, barrels to recoilless rifles with shaped charge warheads can be made at home if a person has no compunctions about breaking the law.

    You can see the impact of 3d printing overseas, where there are a number of rebel groups using 3d printed firearms as their primary armament. Banning guns might reduce the quality of what is available, but it definitely won’t end production in a country full of gun enthusiasts with the interest and skills to make firearms.

    I do not understand why Americans think they are such unfathomably unique snowflakes that none of the evidence or lessons learned from every other developed country could apply to them.

    As I said, our gun culture ensures people continue to make firearms regardless of what the law says. We have countless machinists, gunsmiths, and hobbyists that would manufacture guns as a form of protest if they were banned. Furthermore, we already have more guns than people and the vast majority of them would remain in civilian hands if the government tried to seize them.

    But most importantly, many Americans believe that the equalizing force of firearms—something that allows the citizenry to defend themselves against tyranny and for the weak/frail to defend themselves against the physically strong— is philosophically worth a small reduction in public safety.

  • Political Memes @lemmy.world
    nBodyProblem @lemmy.world

    Conservatives rn

  • The Right Can't Meme @midwest.social
    nBodyProblem @lemmy.world

    Tattoos = graffiti, guys

  • Astrophotography @lemmy.world
    nBodyProblem @lemmy.world

    Aurora over Wyoming

  • The Right Can't Meme @midwest.social
    nBodyProblem @lemmy.world

    Electric cars bad, guys

  • 196 @lemmy.blahaj.zone
    nBodyProblem @lemmy.world

    ass clown rule

  • Cars - For Car Enthusiasts @lemmy.world
    nBodyProblem @lemmy.world

    Me after buying a Land Cruiser

  • 196 @lemmy.blahaj.zone
    nBodyProblem @lemmy.world

    Fudd Rule

  • Cars - For Car Enthusiasts @lemmy.world
    nBodyProblem @lemmy.world

    What Prep Do You Need For Autocross? A Getting Started Guide