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Author Topic:   Discussion of the CMI-AS debate (Meldinoor, NosyNed, Slevesque, Arphy only)
NosyNed
Member
Posts: 8971
From: Canada
Joined: 04-04-2003


Message 44 of 51 (538077)
12-03-2009 11:01 AM
Reply to: Message 42 by Arphy
12-03-2009 5:39 AM


Matching Clocks
Woah, the analogy has changed. We now have ALL the clocks showing the same elapsed time.

There were two analogies:
In one it was just a bunch of random clocks in a store where over half agreed.
In the second it was clocks with different technologies. One scenario given was them all agreeing.
So there has never been a case where the most of the clocks did not agree.

Great, so which oneS are telling the "correct" time?

No clock ever, ever tells the "correct" time since they all have some degree of error. Some have infinitesimally tiny errors.

But that is a nitpick which might be important another time.

Two items:
If you are forced to make your best judgment on the "correct" time what would you pick in each case?
More importantly, what if we are interested in the elapsed time since they were last set in some way? How confident are you in picking clocks which have stayed in sync since then?

Which happens to show many different clocks telling many DIFFERENT times.

Please explain. That makes no sense to me.

No I didn't. Maybe there is, maybe there isn't. My argument does not require something that impacts all clocks. Because you have yet to show that all (geological)clocks tell the same time. My argument was that SOME clocks may be affected in a similar way.

We are still talking about the clock analogy I thought. You said something might impact the clocks and now you jump to geology? Does that mean you were never talking about the clocks analogy when you were referring to impacts?


This message is a reply to:
 Message 42 by Arphy, posted 12-03-2009 5:39 AM Arphy has replied

Replies to this message:
 Message 45 by Arphy, posted 12-04-2009 6:11 AM NosyNed has not replied
 Message 46 by Arphy, posted 12-04-2009 6:15 AM NosyNed has replied

  
NosyNed
Member
Posts: 8971
From: Canada
Joined: 04-04-2003


Message 47 of 51 (538194)
12-04-2009 12:32 PM
Reply to: Message 46 by Arphy
12-04-2009 6:15 AM


Re: Matching Clocks
Great, and some have big errors. How do you know how big the error is? Can you compare them to a "correct" clock?

We don't actually have or have to have a correct clock as we usually think of it since in no case are we really measuring the time of day. What we are measuring is a duration.

We use one clock with a more invariant duration to determine errors in the duration of another. It seems we can also determine the variation in duration of our most accurate clocks but I don't know the details and I'm not sure they are relevant here. At the extremes I think it isn't the variation in durations that produced errors but in how we read out the results and that is understood well enough to put error bars on the readings.

Don't know. I think the best clock is one that is experienced such as counting the number of days by experiencing night and day and making a tally. The person doing the measurements is there at the beginning, middle and end of amount of time measured. This way fluctuations may also be experienced if they occur. Although even here certain faults and assumptions with this. However I don't conclusivly trust any watch that has not been experienced throughout it's whole life.

It sounds like you won't trust any time measurement at all then. So you might as well step out of this debate since it is about a time measurement in the end. (and at the moment about helium diffusion as a measurement method which is known to have a lot of variables that throw it off so you don't trust it at all and can tell slevesque that now).

Since at no time has any one carefully counted time duration for more than years or maybe a few decades you suggest that there are no methods for measuring durations that you will accept. Please be more clear about that.

Personally I wouldn't trust a person ticking off days (or any other interval ) over many of the other methods since I know for a fact that individuals are enormously unreliable at that kind of thing.

Not confident. Clocks that show the same time are more likly to be ones that are in sync with each other, but again not necessarily.

Of course it is true that they are not necessarily in sync. At no time can we have 100 % confidence in any method (including your very weak counting by a person present). However, we are attempting to arrive at what can be considered to be the best conclusion we can some to with the facts at hand. The conclusion may be arrived at with a high degree of confidence or a lower one but it is often still possible to come to a interim conclusion that is somewhat better than "I have no clue."

In the case of the clocks I would give a rather high degree of confidence if all the types of clocks agreed, very high in fact. Why wouldn't you?

I took this to mean that you were giving me an example of two different methods producing the same result. What is actually contained in the message is many methods giving a wide variety of dates for the minimum age of the earth.

You haven't read far enough. If you do you'll find that the method you like -- counting intervals is used to determine absolute dates and the counting methods agree with radiometric dating methods which also agree with calendar dates given by people who "were there". It is [b]not/b just the minimum dates that are given. It is actual matches between widely varying methods that are the "correlations" being discussed.

If you wish to disagree with this you're going to have to actually read the information supplied. We have months so it isn't a rush. I have reading of my own to do on the helium diffusion method too.

ok, what do you want me to do? Research how normal clocks work and find something that effects them all. What would discussing the finer points of water clocks and pocket watches achieve? If we can't transfer this analogy to natural clocks then what is the point? Yes, some things may impact natural and man-made clocks, but not necessarily. going into the details of how man-made clocks work is not the issue.

The analogy here will carry over to the geological examples we will actually be discussing. Arm waving that there might be something affecting them all to produce the same error doesn't cut it here or there. You don't need to know the details of any of the workings of the clocks to realize there is very, very, very, very unlikely to be something to affect all of them to produce a wrong duration that all agree. That is enough for me to assign a high level of confidence in the conclusion until further facts come in. If it isn't for you; if you require 100 % confidence before you stop saying "We have no clue." then you will never have a clue.

btw, won't be here this weekend, I'll be back next week

Enjoy the weekend. There is no deadline to all of this (other than I am getting a bit older :S).


This message is a reply to:
 Message 46 by Arphy, posted 12-04-2009 6:15 AM Arphy has replied

Replies to this message:
 Message 50 by Arphy, posted 12-09-2009 3:19 AM NosyNed has not replied

  
NosyNed
Member
Posts: 8971
From: Canada
Joined: 04-04-2003


Message 48 of 51 (538263)
12-04-2009 11:12 PM
Reply to: Message 41 by slevesque
12-03-2009 1:55 AM


Issues with the 'experiment'
In essence, he made a classic textbook experiment. He had a hypothesis (accelerated nuclear decay), he developped it to the point of finding a way to test his hypothesis. He made the prediction about what the results should be if his hypothesis is accurate. He made the experiment, and the results validated his prediction.

The entire experiment depends on using helium diffusion as a good time measuring method. It can be used as such but is know to be loaded with difficulties of getting it right.

Humphrey's made errors in his calculations which he dismisses as not answering the huge difference between the diffusion time he gets and the times form radiometric measurements. This misses the point. The errors mean that his predicitions are not matched with the observations.

Sure he could rerun the experiment at another location, with other zircon. I could even predict to you that the results would be similar, in my opinion. The only thing, of course, preventing him from doing so is money. It's hard to find finance for this kind of stuff; since creationist research like this is financed by privates.

The location he choose is an area of extra non radiogenic helium that may or may not be a coincidence but it is not handled in his paper. Other YEC writers (Gentry) note that there could be excess non radiogenic helium involved.

Besides, this experiment was done in the broader RATE research group. It isn't an isolated case selectively chosen, but it finds even more weight when viewed within the whole research.

This result should certainly be viewed within the entirety of dating work where it sticks out as a very, very unlikely outlier.

The RATE research concluded that radiometric methods do in fact yield an old earth. They simply decided that this can not be right and somehow, someday an explanation will be found. They have no such explanation.

Finally, I'll say that the result doesn't contradict the dating methods. He is saying that there is 1,5billion years worth of uranium decay, but only 6000 years worth of helium diffusion. Humphreys explains it by saying the decay was faster in the past (much faster), Henke explains it by saying that the diffusion rates were smaller in the past (much smaller).

We know that helium diffusion dating is an uncertain proposition for a number of perfectly clear reasons.

We also know that if decay was much faster in the past then the heat produced is prohibitive to life on earth. The RATE group agrees with this but decides that there must be a way for it to be handled but don't know what it is.

From that point on they are not doing science. They need a miracle.


This message is a reply to:
 Message 41 by slevesque, posted 12-03-2009 1:55 AM slevesque has replied

Replies to this message:
 Message 49 by slevesque, posted 12-08-2009 3:45 AM NosyNed has not replied

  
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