By depth/zero John ?

ðŸ™‚

]]>Thanks for the info Jean, sounds like I was a bit wide of the mark – I was assuming they had crudely mapped a red noise distribution into a short series of white noise distributions, but from your description their methods are not what I had assumed.

The continual guesswork required to figure out the obscure methods they apply when there are perfectly good “off-the-shelf” methods is hugely frustrating.

]]>A black hole is derived from D = M/V where V ==> 0, ok, you are right, a finite mass in no volume.

Nyyaaaaa!

]]>(a black hole is essentially a point in 3-D space which has no volume but infinite mass)

No it isn’t. Black holes have a definite finite mass.

]]>But when PCA and other statistical derivations are plotted, one quickly loses sight of the physical connection of the data and become embroiled in the, admitedly really interesting, mathematical properties of the derived data. I experienced that when Geostatistics started to become significant in mining and mineral exploration. Except that in the case I know about personally, a start from first principles was deemed mandatory. Once that was done, geostatistics became rather mundane and overhyped.

So in mineral exploration we cannot allow ourselves such intellectual luxuries of arguing over statistical minutae but apparently in academia, these days, it is quite normal, since operating profitabally is an unknown experience. (Well, no, since academics, when doing outside consulting, sure know how to charge, so the profit and loss concept is not unknown to them).

We (mining types) would call it another “flight from reality” instance.

This seems to have occurred in astronomy where the maths are more important than the observations – black holes for example which where initially inferred from the maths, (a black hole is essentially a point in 3-D space which has no volume but infinite mass), and as the maths so sprake, so did the astronomers so search.

It never occurred to them that the maths might be in error.

It never occurs to the faithful that their beliefs might be misplaced.

And the rest of us have to put up with the crap that this blind adherence to dogma, whether scientific or theological, generates.

Hence this blog which Steve runs.

]]>