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Cake day: July 9th, 2023

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  • decerian@lemmy.worldtoScience Memes@mander.xyzProblem?
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    18 days ago

    I disagree there - peer review as a system isn’t designed to catch fraud at all, it’s designed to ensure that studies that get published meet a minimum standard for competence. Reviewers aren’t asked to look for fake data, and in most cases aren’t trained to spot it either.

    Whether we need to create a new system that is designed to catch fraud prior to publication is a whole different question.




  • Well, yes and no.

    Quantum computers will likely never beat classical computing on classical algorithms, for exactly the reasons you stated, classical just has too much of a head start.

    But there are certain problems with quantum algorithms that are exponentially faster than the classical algorithms. Quantum computers will be better on those problems very quickly, but we are still working on building reliable QCs. Also, we currently don’t know very many quantum algorithms with that degree of speedup, so as others have said there isn’t many use cases for QCs yet.







  • Gravity and vacuum are not mutually exclusive - you always have to deal with gravity forces, although they become negligible pretty quickly when you get into and then leave orbits.

    As to the specific claim, I suspect that the experiments they are currently doing (in vacuum chambers on earth) have gotten to the point that they are measuring the propulsion system producing more thrust than it’s own weight (T/W >1), which would technically be enough thrust to overcome gravity. Even if it wasn’t practically useful for actually getting to orbit, that amount of thrust on a reactionless motor would be incredible, and would totally unlock the solar system for us.


  • When you say “university staff”, do you mean professors, or some other technical support staff?

    If professors, then reaching out by email is probably a good way to start. They may get a lot of emails though, so your best chance to get a response might be timing the email right at the start of summer when they hopefully don’t have any ongoing classes.

    In terms of payment - most professors would happily talk about their areas of study with interested people for a short time (for free). If you needed a significant time investment from them though, then you might start having issues.


  • In my time looking for published papers, I have only very rarely seen papers which are also hosted by the university of the author. I suspect in your case it was hosted because of something specific to the school or the author, rather than a general thing.

    What I am seeing more often in my field is people posting a version of the paper on “arxiv”. This is a similar open-access approach, but you do have to be careful with arxiv papers as you can post anything on it, including work that never was or will be peer-reviewed.


  • If you’re mixing things up in the kitchen, typically you try to be somewhat precise with ratios.

    The difference in this case being that because the actual ratio of the blend is unknown, you don’t actually know how it would crystallize. Technically they could even change up the ratio week to week based on the price of high-fructose corn syrup so you wouldn’t even get consistency from it.




  • Believe it or not, but companies outside of Boeing and Airbus are capable of designing airplanes.

    It’s not just “good” regulation holding them back either - in 2017 Boeing accused Bombardier of “dumping” some CSeries planes because they sold them to Delta at below the retail cost (about a 30% discount). The CSeries was/is a good plane, but took an incredibly long time to get through certification so Bombardier had been losing money and was desperate to sell them. Boeing complained about this discount to the US International Trade Commission who imposed a massive fine on Bombardier. Because of the delays, Bombardier couldn’t afford to fight the fine so they ended up having to give up a 50% stake in the design to Airbus for only $1. The year after, the fines were appealed and overturned, but the damage was already done. Bombardier has since completely sold their stake in the CSeries (one less competitor), and Airbus gets the renamed A220 series for a massive discount.

    As an aside, I can’t argue that the FAA doesn’t do more good than harm in this space generally, but I’m the last ~5 years it’s becoming clear to me that they have a massive blindspot for Boeing in particular.