Leaderboard

100%, this is my take. The guy was a registered Republican with very little social media presence. According to classmates he was bullied relentlessly throughout high school, and then got into firearms and other weaponry online as he continued to self-isolate. I do think he was attempting get Trump though, for whatever reason. Fame, notoriety, some belief that was festering that he didn't articulate. Perhaps it was to strike back at the type of people who had mistreated him in that small town for so long. No manifestos or screed found yet, and I doubt they will be found. But all in all, it's essentially just another mass shooting in America, one that happened to be in a more publicized setting, thus meaning has been placed upon his actions which might not have truly been there.

Having only lately caught up with the ideas surrounding the Alcubierre warp drive concept, I am still struggling to understand how such a system would cope in regions of seriously non-flat spacetime - say, performing an otherwise lethally close "flyby" (excuse the grammatical hand-waving here) of a neutron star or stellar-mass BH. Reading between the lines from some online articles, none of which directly address this subject, the thought comes to mind such a spacecraft and its occupants would be unaffected by such an encounter while in warp mode, no matter how intense the gravitational tides might be. Nonetheless, the suspicion is that this may not be correct, though all this is way beyond my ken. Any ideas?

This is a spectacularly horrible way to start any conversation. You'll tell us something tomorrow you aren't sure of today?! This is a science discussion forum. If this is a commercial come-on, it's not wanted here.

So your inability to add more detail to posts is similar to someone who has an inability to walk?

As you wish, Bwana.

Just got curious; my interpretation; combining explanations already given with some hints in videos. and Assuming there are no hidden pumps or other devices. And the contraptions in the videos need only to work for a short while; just long enough to create a video clip. First video, in opening post: fill the large and wide container with lots of water (in other words, perform work) add a small diameter inlet (I checked one more video and they also seem to have a larger outlet than inlet. In the OP video a hose with smaller diameter seems to be attached to the inlet) open a larger diameter outlet at the bottom While the container is being emptied a smaller amount of water will be flowing in from the inlet due to the lower pressure inside. The large diameter of the tank (compared to the small outlet and even smaller inlet) means it is tricky to see, in a short clip, that the water level is sinking. Guess: By manually filling a tank with lots of water, you can pump up a small amount of water with the help of the potential energy. If the ratios of diameters of inlet, outlet and tank are off then the tank will drain in "bursts", allowing air to flow through the outlet. Similar to a filled water bottle being turned upside down If the device is left for a while tho flow of water into the container will stop and air will enter through the outlet, in "bursts", also similar to a filled water bottle being turned upside down. So, it is just a trick to create a YouTube video. (Or my assumption is wrong and there is a hidden pump )

Yes, we can hope - hope - he gets a short-term bounce in support that fades by November. The Trumpies are of course making hay with it, insinuating Biden was behind it, claiming Trump was saved from otherwise certain death by Almighdy Gaaad, etc, etc. But there is hope, I suppose, that such swivel-eyed lunacy is mainly preaching to the converted and won't sway the swing voters much. Fascinating, in a hideous way, to see how Trump is suggesting it is the will of God (!) that he, a known sex pest and crook, should be elected. Elmer Gantry on steroids.

That’s an excellent question. First and foremost, the original Alcubierre metric requires that spacetime outside and inside the “warp bubble” is Minkowskian, and thus flat; it is only the “bubble wall” which exhibits non-trivial curvature. If you take away this condition of asymptotic flatness by allowing non-negligible background curvature, the Alcubierre metric is no longer a valid solution to the Einstein equations under those circumstances. This is because GR is a non-linear theory, so one can’t simply add metrics together and expect the result to again be a valid solution to the field equations. IOW, the warp bubble wouldn’t remain stable if it came under the influence of a gravitating body; you might suddenly get strong tidal forces acting on your ship, or the bubble might simply break down and disperse. Which begs the question - is there any kind of topological construct that behaves similar to Alcubierre’s warp bubble, but can exist in the presence of strong background curvature? I don’t know the answer for sure, but potentially this is possible. But then, such a construct would depend on the specifics of the gravitational environment, so if it propagates from a region of strong curvature to a region that is nearly flat, it would almost certainly not remain stable, so you’d have the same problem. So is it possible to have a warp bubble metric that remains stable irrespective of the gravitational background? Due to how the Einstein equations work, I would say almost certainly not. What may be possible though is to find a specific warp metric for a specific flight path through a given, specific gravitational environment. You’d have to know where you want to start and where you want to end up, and the exact spacetime curvatures in all regions in between. If you then had a powerful enough computer, you could try and find a metric that describes a stable warp bubble propagating through this setup. You would have to perform this calculation anew for every journey you want to undertake, since it’s specific to the parameters describing each journey. It’s another interesting question to ask whether it is guaranteed that there always exists a solution; perhaps some routes cannot be flown at warp speeds…?

One of my first jobs was molding plastics at a place called Chemcut. We made machines that cut metal with acid instead of with machine tools. The basic process is to coat the metal with something that is acid resistant but breaks down under UV light. You then cover the metal with a negative of the piece you want and bombard it with UV light then run it through an acid bath that eats away all of the metal under the broken down chemical. I know at least 2 watchmakers had bought the machines because hundreds or even thousands of gears or other small parts could be manufactured at once in a relatively short time.

There might be a certain amount of flack that comes with calling yourself Alex Krycek, given that famous character's tending to switching allegiances and peddling disinformation (and being Russian-American, with attached conspiracies). That said, I have no reason to believe @Alex_Krycek 's opinions are not his own. I would vote for deep breaths all around and dropping the ad hommies. I find America's two party system fairly toxic, with both tending to require their members to wear tight ideological corsets. I think Dems have done better at letting new ideas percolate upward, which is why Independents like Bernie will caucus with them.

I think what you need to do is make a compelling case for whatever you think the answer is. An alleged failure of science does not mean a particular alternative is correct. (i.e. not knowing the identity of a creature does not mean it’s Bigfoot. You need positive evidence to support the latter)

Maybe next time allow your brain to brake instead

not even wrong

Really?

You can really get dragged into the weeds trying to react to individual random graphs generated to sow disinformation, unless you are an expert in the field. There’s a whole cottage industry peddling disinformation “talking points” and as soon as you knock down one they will come up with another. The question really is whether these people seriously believe all the climatologists are wrong, whereas they, with their barrack- room lawyer’s opinions, are right, or whether they think the climatologists are all - worldwide - engaged in some kind of conspiracy, and if so, to what end?

Then you should express your thoughts in a more detailed and less ambiguous way.. Everyone on the forum wishes that..

..starting programming with JavaScript is one of the worst decisions someone who wants to learn programming can make.. Web browser + NotePad = you don't have a debugger, documentation, completion, errors and warnings are hard to get, you don't have the tools a newbie should have.. Your whole post is silly.. and childish...

Yes, quite right, you are both insane and silly.

Blather cannot be disproved. So much the worse for the blatherer.