Amateur Radio Guy (General Class Ticket), Python Programmer, UX implementor, Father, Husband of 25 years, Brewer, Technologist, Home Chef, Linux/Unix Whitebeard, Buddhist, Artist, Maker, Guitarist, Sailor, Generally Pervy Old Bastard.

Champion of Reason, Logic, and Philosophy.
Antifascist Punk.

  • 2 Posts
  • 16 Comments
Joined 1 year ago
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Cake day: June 17th, 2023

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  • @djidane535

    Interesting but not really helpful. I found something in a recent FAQ that says I should add an article instead of a post, but the option to add an article is not on the menu on my instance, as it is in their screenie

    Also I’m a mastodon user, and my account there is the focus of my microblogging activity. The user there follows this account, so my posts here, show up there. The short story is, the microblog here is essentially a right pain in my ass.

    At least now I know what it is.





  • @FfaerieOxide

    @readbeanicecream @exscape

    Thank you for linking that! I knew I had read that they could be, but I couldn’t recall where. It might not have been Scientific American, but that’ll do XD

    While clearly they can be, infinity == infinity is still true, If I recall.

    Also, I’ve got some simple problems with that crate analogy, Scientific American or not; any crate with an infinite number of anything inside it cannot be emptied, it’s in the very definition of infinite. Consequently, neither crate will ever empty and the pairing will be an infinite pairing of apples and oranges.


  • @exscape

    @readbeanicecream

    A couple examples of manifolds:

    • exhaust manifold on combustion engine takes raw cylinder exhaust gases in pipes that all come down and combine into a single larger pipe that connects to the input of a catalytic converter.

    • the plenum in your attic is a manifold. One big duct runs from your air handler into a box with several ducts coming from it, delivering air to each of the vents. the ducts and the plenum form a manifold.

    In literature, it means ‘many and various’.

    In mathematics, “a collection of points forming a certain kind of set, such as those of a topologically closed surface or an analog of this in three or more dimensions”

    In Kantian philosophy, “the sum of the particulars furnished by sense before they have been unified by the synthesis of the understanding”

    Origins: Old English manigfeald ; current noun senses date from the mid 19th century.

    All from the wikipedia

    They all have some descriptive relevance, but the one that really counts for us is the math one, suggesting the closed surface.

    It wouldn’t surprise me though if it still worked; there are many examples of topologically closed surfaces that can still be traversed, if in unexpected ways. I’m thinking of another manifold, the klein bottle, and of course the mobieus strip.



  • @exscape

    @readbeanicecream

    By definition, a manifold has a place where things go in, and other things come out. So yes, it does in fact logically follow. If its a manifold, then it logically follows that what goes in comes out.

    You’re saying we know a bunch of stuff I’m not certain we know.

    My understanding is that by definition, the singularity has infinite mass and infinite gravity, so there is no way it can gain mass; because infinity + 1 = infinity. It’s the very nature of infinities. You can have a number of infinities, but manipulating them arithmetically always yields infinity. 2 x infinity = infinity. 3 / infinity = infinity.

    Like zero, it is more identity than number. 0 = nothing, infinity = everything.

    So if you hope to have me follow your narrative, you’re going to address this assertion concerning increasing the mass of black holes first.



  • @readbeanicecream

    I’m no authority, but I love this stuff. I read Dr. Hawking’s book “A Brief History of Time”, and it was not problematic for me.

    My takeaway is that a black hole is a sort of manifold. It would follow that if there is a way into it, and stuff going into it, the stuff must be coming out somewhere.

    The question is where that stuff comes out, and in what form, and when, in it’s local time frame.

    I had always envisioned this hypothetical ‘other side’ as a white hole. It seems like, since we haven’t observed any white holes, that the exits must be elsewhere.





  • @gentleman

    @blightbow

    I too tried to flee reddit for lemmy.ml, over a year ago now - and found it to be a far worse clusterfucked shitstorm than reddit ever was, and I mean that ideologically, philosophically, politically, and morally.

    I just didn’t go back until the current exodus, mainly because I was trying to see if the account still worked, and it had been lost/purged/banned whatever

    fuck those guys and the horse they rode in on, then far as I’m concerned, they can ride it back out of here wet.

    Might as well federate with facebook.