@Jimself Really? Doesn't everyone use laptops these days?
user54412
5:04 PM
@0celo7 Take a 100-bit file. Say your compression algorithm makes it 20 bits. But there aren't enough 20-bit strings to encode all possible 100-bit strings. Keep applying pigeon hole to see that if some files get smaller, some must get bigger with the same algorithm.
@0celo7 lossless compression is something like GZIP or RAR or so on which allows you to exactly recover the original data (as opposed to the compression in MP3 files, which discards some of the original information). No lossless compression algorithm can reduce the size of every possible file, for the reason @Chris explained.
user54412
And after using a good compression utility once, you'll probably have just structureless noise, at least as far as any other compression utility is concerned, so there's nothing to be gained.
@KyleKanos: No. Just no. Even IBM is switching to MacBooks slowly but definitely.
user54412
@JohnRennie I thought this too. But then it's so easy to buy a better graphics card here, some new RAM there. And next thing you know you've spent more for only the most marginal gains.
Would you anyone please explain the paranormal activities by physics.
We want to make a wall magazine on that subject. Please help us with new ideas.
We want its definition, and characters.
now hold on, @KyleKanos, we very well could approach that question as a way to explain why physics would necessitate that the commonly held idea of ghosts can't exist
@Jimself Sure. Then any question about things that are blatantly off topic can be kept open because we could always explain why physics would necessitate the commonly held notion of [blatantly off-topic thing] can't exist
@KyleKanos: Only because smartwatches don't sell as good as say iPhones, it doesn't mean Apple isn't making a lot of money off them. And a lot more than any other competitor.
@KyleKanos: Well guess what, most people only need one of them. It still makes the sales overall a LOT better than any other competitor. I really can't follow your logic (honestly I'm trying).
@KyleKanos: I think I do have understanding of business, and I can see for example in the US most universities - places where it should be all about learning and teaching - run like businesses.
@Huy No it isn't. Tautology is defined as the saying of the same thing twice in different words, generally considered to be a fault of style (e.g., they arrived one after the other in succession )
Saying Cook isn't Jobs is, by definition, not a tautology
But I'm not comfortable with this part in Weinberg, I think, he's doing group theory without doing group theory, and therefore mine and @Danu's greatest enemy!
@Jimself that might work on kids, but some trolls will then ask, "how do you know then ghost are not counter examples to show that physics laws do NOT hold for everything?"
personally, I don't believe it at all
but evil walk the land, I have seen some professors even work on these kind of supernatural things and get paid + funding.
@Shing Assertions that are made without evidence can be dismissed without evidence. Someone making an existence claim needs to supply evidence, not the one doubting the existence claim.
@0celo7 Sadly, Weigand doesn't do this either, but with "group theory without group theory" I mean that they muck about with indices and special structures without explaining how what they're doing is just a very special case of representation theroetic techniques. It's all so much clearer once one knows the general Lie algebraic techniques, in my opinions.
I have tried to talk to my friends believing in ghost that science require repeatable experiments on claims, but any experiments on ghost with positive result are not repeatable.
fyi re "spirits" all there are some weird experiments where bodies were attempted to be weighed accurately exactly pre/post death & one researcher reported changes. have some funky book on it somewhere.
@skillpatrol thanks, i made the last one chick on "reopen" as I thought that actually why energy conservated can be answered by symmetry, then asking why symmetry can be a physics question.
@vzn The experiment interpretations don't make sense. They measure a mass difference and instead of asking "where did the mass go?" or "Was it gas?" they say "Aha! The soul must have just left"
@Jimself have only heard of 1 such researcher. am browsing his wikipedia entry right now. managed to find him via a chapter in a relatively recent book.
> The physicist Robert L. Park has written MacDougall's experiments "are not regarded today as having any scientific merit" and the psychologist Bruce Hood wrote that "because the weight loss was not reliable or replicable, his findings were unscientific."[4][5] [wikipedia]
"not replicable." but my question is, did anyone actually try to replicate it? who said it was "not reliable"? was that based on MacDougalls own data [which is dismissed] or someone elses?
@Jimself right, and critics complain of "selective reporting". but if they say his own data is unreliable, then arent they selecting some of it, ie exactly the part that disagrees with their own (preconceived) hypothesis?
@KyleKanos hey what about miniature golf then? perfect summer activity. was just by a great course last sun. it had a squirting/ exploding/ flaming god-head. boring?think not!
@vzn no, it's just that when written, we were not yet quite into QFT and we were explaining things mostly with QM and in particle nature. Later on, QFT took over and showed that everything is fields. Einstein was right even as he was arguing for us to stick to old ways of thinking
@KyleKanos hey now that could be fun. was just thinking, how about a show that visits top miniature golf courses in the country/ world? & has commentators? :)
@Jimself QFT says particles can be thought of as "high density" fields? missed that somehow
@KyleKanos maybe you like more bash-and-crash sports. lots of ppl complain about bowling as a sport. etc. ... a wide difference in opinions on what constitutes sports. eg some of my favorites, robot soccer, or robot battles :)
@vzn I'd put sports that are indrect competitions (golf, bowling, billiards) on the lower end (1-4 range) while sports with direct competition (baseball, basketball, etc) on the higher end (6-10)
@KyleKanos actually am just playing devils advocate with you. have probably been known to joke about golf as utterly boring also. however, did once play 3 generations of my family in the same game. memorable to say the least.
@0celo7 One can cut down on them substantially, yes, but at some time you have to compute stuff explicitly or at least explain the the notation, I think
Would you anyone please explain the paranormal activities by physics.
We want to make a wall magazine on that subject. Please help us with new ideas.
We want its definition, and characters.
