Cafe Einstein : LPTP #9...onward and upward

mikey
mikey
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RE: As noted above in my

Quote:


As noted above in my description of taking a car out in the morning, starting the compressor is one of the first things in the process. It then takes a few minutes to build up pressure while the operator does other stuff before actually moving the car. However, antique streetcars at a museum are not life-safety protection equipment like fire engines are, so it doesn't really matter as long as it doesn't take too long and it can keep ahead of the inherent leakage in the system. (If the car is sitting still with the brakes set lightly, the compressor will kick in about every 15 minutes or so.)

The barns are not heated (except maybe the one where they do actual restoration work), but they do provide shelter from wind, rain, snow, hail (had a major hail storm during the annual rules meeting last spring), and of course bright sun. (Not to mention the odd vandal.)

That makes sense!

Quote:
BTW, Mikey, are we anywhere near having a winner?

We could be.

Bill592
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From another thread

From another thread .....

Quote:
My pc's will be back online later today or tomorrow, I had to take a short trip and turned them off.

You turned them OFF ???

Won't that create a 'Rift' in the space/time data crunching continuum ?

Bill

mikey
mikey
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RE: From another thread

Quote:

From another thread .....

Quote:
My pc's will be back online later today or tomorrow, I had to take a short trip and turned them off.

You turned them OFF ???

Won't that create a 'Rift' in the space/time data crunching continuum ?

Bill

It may but my stand alone basement a/c unit is VERY dusty and it was 91F in my basement the day I was leaving, I was afraid the a/c unit would die and cause problems so just shut everything down. It was 67F down there when I got back, all the pc's came back on and the temp is rising again, and yes the a/c unit is back on too. I tried cleaning it but can't reach all the fins very well so will ask my whole house a/c guy what to do next.

As for my rac it continued coming thru even though the pc's were down for a week! I was surprised at that, but it should be building again now. My normal rac is near 200k per day, I got 40k yesterday and todays hasn't been posted yet.

Bill592
Bill592
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RE: As for my rac it

Quote:

As for my rac it continued coming thru even though the pc's were down for a week! I was surprised at that, but it should be building again now. My normal rac is near 200k per day, I got 40k yesterday and todays hasn't been posted yet.

Howdy Mikey,
You should move all your PC's up into the upstairs living room ! No need to run the furnace this winter !

I'm going to hazard a guess that your Wife would 'Veto' that plan ))

Bill

mikey
mikey
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RE: RE: As for my rac

Quote:
Quote:

As for my rac it continued coming thru even though the pc's were down for a week! I was surprised at that, but it should be building again now. My normal rac is near 200k per day, I got 40k yesterday and todays hasn't been posted yet.

Howdy Mikey,
You should move all your PC's up into the upstairs living room ! No need to run the furnace this winter !

I'm going to hazard a guess that your Wife would 'Veto' that plan ))

Bill

Ha ha...YES she would!! I have a 2 story Colonial style home with a full basement too, the air flow is just VERY bad in this kind of boxy home.

Mike Hewson
Mike Hewson
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Hi guys ! :-) I've just

Hi guys ! :-)

I've just cut a great deal for domain management and website hosting for mikehewson.id.au. I've been using it purely for file storage, to be linked to via http access eg. images of interest in my Science board threads. The previous mob had charged me $250/year for domain name registration, now I get that for $22.50 for two years. The other part is web hosting, previously at $620/year ( 1G space and 1G/month transfer ) is now at 10GB disk space and 100GB/month transfer for $160/year. My daughter works at the company [ iiNet is Australia's second largest ISP after Telstra ] and so she pointed me towards the department that do all that stuff. The trick is to only buy what is needed eg. I don't need any web commerce etc facilities. While I didn't get a 'father of an employee' discount ( drats ) is that a good catch or what ? :-)

Also the prior mob had restricted ftp access aliases to zero, no restriction now. Now no restriction on subdomains either. Plus they had really screwed up the permissions on the server side directories by obfuscating the need to use .htaccess files when they changed their server arrangements, without alerting me. Morons.

Anyhows I think I may build a proper web presence ie. a site for my various bits and bobs vis-a-vis maths and science topics. I have some cool ( well, I think they are ! ) ideas for animations, multimedia and some nice math fonts n' stuff. So I have to go and study/refresh some HTTP, Javascript, stylesheets especially and PHP guff. It's served by an Apache instance so I can have a ton of good stuff if needed. It's also hosted on Linux machines. Linux/Apache combos just rock, roll and rule !

The actual/formal DNS entry changes will go live sometime in the next 24 hours [ that covers the lookup/translation of domain name to IP address ].

Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter ...

... and my other CPU is a Ryzen 5950X :-) Blaise Pascal

mikey
mikey
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RE: Hi guys ! :-) I've

Quote:

Hi guys ! :-)

I've just cut a great deal for domain management and website hosting for mikehewson.id.au. I've been using it purely for file storage, to be linked to via http access eg. images of interest in my Science board threads. The previous mob had charged me $250/year for domain name registration, now I get that for $22.50 for two years. The other part is web hosting, previously at $620/year ( 1G space and 1G/month transfer ) is now at 10GB disk space and 100GB/month transfer for $160/year. My daughter works at the company [ iiNet is Australia's second largest ISP after Telstra ] and so she pointed me towards the department that do all that stuff. The trick is to only buy what is needed eg. I don't need any web commerce etc facilities. While I didn't get a 'father of an employee' discount ( drats ) is that a good catch or what ? :-)

Also the prior mob had restricted ftp access aliases to zero, no restriction now. Now no restriction on subdomains either. Plus they had really screwed up the permissions on the server side directories by obfuscating the need to use .htaccess files when they changed their server arrangements, without alerting me. Morons.

Anyhows I think I may build a proper web presence ie. a site for my various bits and bobs vis-a-vis maths and science topics. I have some cool ( well, I think they are ! ) ideas for animations, multimedia and some nice math fonts n' stuff. So I have to go and study/refresh some HTTP, Javascript, stylesheets especially and PHP guff. It's served by an Apache instance so I can have a ton of good stuff if needed. It's also hosted on Linux machines. Linux/Apache combos just rock, roll and rule !

The actual/formal DNS entry changes will go live sometime in the next 24 hours [ that covers the lookup/translation of domain name to IP address ].

Cheers, Mike.

That does sound like a great savings, faster, better and cheaper! Ummm WAIT A MINUTE....that's the slogan they are using at my last employer to refer to how they handle the Welfare Clients..."faster, better, cheaper"! BE AFRAID, BE VERY AFRAID...they have scrapped MOST of the "faster, better, cheaper" BS because that is exactly what it is! It took 'customer service' out of the equation and meant each 'client' had to see multiple 'workers' to get anything accomplished, as each 'worker' became specialized. FORTUNATELY I was just a pc tech guy, NOT a 'worker' that had to deal with the 'clients'.

Too many 'workers' meant cases going from this office to that, we had 5 major offices spread across 400 square miles, with over half a dozen smaller offices thrown in. You wouldn't BELIEVE how many cases got lost 'in transit'! Sometimes IN THE SAME BUILDING!! As a tech guy I got to visit, and repair or replace all of their pc's and printers, and listen and see first hand the effect "faster, better, cheaper" had on the 'workers' and 'clients'.

They are switching back to the old way of each 'worker' having a day in the intake section where they interview new 'clients', and then handle that particular case no matter what kinds of services the 'client' needs. It means less 'specialists', but more 'jacks of all trades' type workers. They then have some specialists for each kind of service needed, in each office, they can go to for any questions or help. The 'specialists' then randomly pick cases to review to ensure all policies are being followed as local, State and Federal monies are involved. They will provide any training needed as fines can be assessed when the State Reviewers come in and look at EVERY case and find problems. Usually the problem is overpayment, or lack of documentation for a payment, when the State Reviewers find a problem the local jurisdiction has to cover the cost by a 'fine', that is in fact just a reduction in any future monies to recover the overpaid or undocumented money.

My wife went from being one of the 'workers' to a 'specialist' to now a 'State Reviewer', she likes this MUCH better!! No more 'clients', Dr. House was right "everyone lies", just reading cases to ensure the rules are followed to the letter. The Feds, State and locals will pay, for instance for a kid to catch a taxi to school or the doctors office, but NOT for an allowance for them to buy a bottle of water. ALOT of jurisdictions try to slide that thru, also they pay things on 'say so' not documentation, that too gets flagged. They CAN pay now and get documentation later on, ie pay the doctor today but get the bill 30 days later, but they CAN'T pay and NEVER get the documentation. With soo much work that OFTEN slides thru, until my wife catches it. Some jurisdictions have HUNDREDS of kids in the system, some only have a few. The problem comes in when the fewer kids they have the fewer full time workers they assign and things get missed. My wife focuses on 'kids' cases in the welfare system, with 'kids' being anywhere from 1 day old to 99 years old. MOST people age out of the system at 18 years old, but handicapped kids never 'age out'. Anyone, not handicapped, turning 18 years old has to reapply as an adult and then all new rules apply to them.

David S
David S
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Well. Saturday had much

Well.

Saturday had much nicer weather than the previous one. That's about the only nice thing I can say about it.

Turns out the streetcar has TWO air tanks and each one has a drain valve. I turned on the power and raised the trolley pole and the compressor started running, and soon I heard "whooooooosh" coming from under the car. Turned off the compressor and got down on my knee to look underneath. You have to practically crawl under the car to reach the second valve, just to push it closed. After that, everything was all right. Only lost the pole once in the yard. Half way around the Car Line. Switcher wants to come out of the new connector. "Hold at Barn 9 North." Okay. Then the Electric Line Dept. wants to take the Car Line out of service all day to change out a pole. This involves parking a truck on the track. I get past it once and then for most of the day, I Ping-Pong back and forth from Barn 9 North to Central Ave. Pavilion. Change trolley poles every time. Running reverse direction around the loop is a whole different experience. In the normal direction, there are marks on the ground telling you where to cut power as your pole goes through frogs and insulators. Going reverse, you have to figure this out for yourself. Only lost the pole once, going a bit too fast (I guess) through a switch (apparently the pole tried to go straight instead of diverge). By the middle of the day, my right knee was aching from climbing on and off the car every time to change the poles. (They told me over dinner later that I was now indoctrinated as a full fledged operator.) Then came the real killer: opening that second valve when I put the car away. Back down on the sore knee. Can't possibly reach it. Get a stick and try to bang it open. Finally succeed. Then open the easy one and it blows wet air right in my face. Bleah. And I realized over dinner that I left the heater switches turned on. One of the guys said he would take care of it the next day. I thanked him profusely. Since the Electric guys only managed to take down the old pole, presumably they spent Sunday putting up the new one. Since nobody was on the schedule for the streetcar anyway, they probably just didn't run it at all.

Anyway, my knee still hurts. Seeing the doctor tomorrow anyway, so I'll mention it.

David

Miserable old git
Patiently waiting for the asteroid with my name on it.

Mike Hewson
Mike Hewson
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I've just a read a tremendous

I've just a read a tremendous article in American Scientist titled "The Statistical Crisis in Science : Data-dependent analysis—a 'garden of forking paths'— explains why many statistically significant comparisons don't hold up.".

It speaks of the difficulty of relying upon pure data analysis to actually 'prove' anything. The issues are the selection of data prior to applying statistical tests, the selection of the test to apply, choice of baseline or null hypothesis, coupled with suppression of knowledge of those choices ie. if one doesn't reveal what has been excluded or chosen then no-one else is the wiser. They give an instance where the following analyses could apply to the same original data set ( my red emphasis ) :

Quote:
For example, the null hypothesis could be rejected (with statistical significance) among men and not among women—explicable under the theory that men are more ideological than women. The pattern could be found among women but not among men—explicable under the theory that women are more sensitive to context than men. Or the pattern could be statistically significant for neither group, but the difference could be significant (still fitting the theory, as described above). Or the effect might only appear among men who are being questioned by female interviewers.

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There are many roads to statistical significance; if data are gathered with no preconceptions at all, statistical significance can obviously be obtained even from pure noise by the simple means of repeatedly performing comparisons, excluding data in different ways, examining different interactions, controlling for different predictors, and so forth. Realistically, though, a researcher will come into a study with strong substantive hypotheses, to the extent that, for any given data set, the appropriate analysis can seem evidently clear. But even if the chosen data analysis is a deterministic function of the observed data, this does not eliminate the problem posed by multiple comparisons.

Quote:
This multiple comparisons issue is well known in statistics and has been called “p -hackingâ€


The impetus for the article is to point out fallibility in certain well discussed scientific issues that are subject to data analysis only. This concern is across all data sets ie. independent of whether the data is obtained by physical measurement or as a product of modelling.

For a doctor such as myself, some 29 years practising this month actually, this comes as no especial news. I was taught of this and similiar problems some 30+ years ago, mainly under the heading of "biostatistics". This was in order to enable us budding doctors to have some facility in detecting bias in drug data as presented by their manufacturers. What is the more disappointing since is the spread/blossoming of such techniques well beyond the usual commercial settings. These types of practices are now well embedded in large sections of academia and accepted as a norm not to be challenged within some craft groups.

Cheers, Mike.

( edit ) I will, yet again, draw your attention to Richard Feynman's Speech to Caltech Alumni, now some 40 years ago, where he very accurately identified attitude problems found then, as now in much modern research. Specifically the responsibility of individual researchers to manage their own behaviour so that :

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.... it's this type of integrity, this kind of care not to fool yourself ....


is honoured. IMHO the key portion of his speech is that :

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.... he didn't discover anything about the rats. In fact, he discovered all the things you have to do to discover something about rats ...


( edit ) Actually, good examples of present day 'cargo culting' are demonstrated by, say, open forums with low or no moderation like at Amazon.com. Even a short read through any thread or topic chosen randonly will reveal a blizzard of literary and language mechanisms that have been substituted in place of critical thinking. Even if one places to the side obvious trolling, ad-hominem, disordered personalities, socially challenged keyboard warriors, plain silliness and the like, there still seems to be a large residual slab of genuine* failure to think :

- it's on the internet and I have provided a link, so it must be true for that reason alone. [ proof by hypertext ]

- you didn't provide an internet link, so it must be false. [ proof by hypertext ]

- I witnessed an instance, therefore it is true. [ proof by anecdote ]

- I haven't witnessed an instance, therefore I am unbiased. [ proof by ignorance ]

- some group of people are self defined as authoritative, so they tell no lies. [ proof by groupthink ]

- if repeated often enough then some assertion is true. [ proof by repetition ]

- if I repeat the same assertion from differing sources that proves it. [ proof by plurality ]

- I assert thus, so you hold the burden of disproof. [ proof by contra-positive failure ]

- I write something complex, so it must be truer than something more plainly put. [ proof by sounding clever ]

- I write something simple, so it must be truer than something with a more complex explanation. [ proof by folk tale ]

- I have credibility in one field of endeavour, therefore I am also correct in an unrelated knowledge domain. [ proof by eminence ]

- it was true last year and so it must be true now. [ proof by same, same but same ]

- it was true last year and so it must be false now. [ proof by same, same but different ]

- a label exists, therefore it is true. [ proof by definition ]

- a label exists, therefore it is false. [ disproof by definition ]

... and so it goes. :-) :-)

Have a browse through some of those discussion boards. Don't bother deciding if some proposition is true or not, just look at the cognitive mechanisms used by participants. Compare with Feynman's 1974 observations ...

* by 'genuine' I mean some people actually believe, in their heart of hearts so to speak, that they are indeed thinking critically ! They really are unaware that their thought processes are quite broken for scientific application.

I have made this letter longer than usual because I lack the time to make it shorter ...

... and my other CPU is a Ryzen 5950X :-) Blaise Pascal

David S
David S
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Too much deep thinking,

Too much deep thinking, especially after mucking through the overload of posts at Seti's Crunching forum.

Winning!

David

Miserable old git
Patiently waiting for the asteroid with my name on it.

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