Isochron radiometric dating new thread

Can she draw a reasonable conclusion concerning how long the stocker had worked? Now imagine another case, in which the manager counts the 100 cans of corn on the shelf, but she does not bother to count how many empty cartains are in the waste bin. Howard is a current faculty member at my old alma mater, I feel a certain obligation to respond, heh. Howard's paper, and it does appear to me that he's trying to use a journal devoted to pedagogy to get around the peer review process in expressing his skepticism to radiometric dating. There are links at the bottom of the page to Howard's response, as well as that of the two reviewers.She concludes the stocker must have worked for 10 minutes. ""Just as the manager must count cans of corn and discarded cartons in order to judge how long the stocker had been working, so must the chemist identify and quantify all products from a reaction in order to deter-mine how long the reaction has been going."Howard says that since we do not know know the details of the 40K - 40Ar reaction, including all products, it's impossible to know that we receive an accurate radiometric dating, because it's impossible to know if there are any other factors (like, perhaps, some other non-radiogenic sources of 40Ar in the mineral) that cloud our measurements. The reviewers comments are interesting: one doesn't care whether or not Howard is a secret creationist -- he appears to think that the exercise is a good one for teaching critical thinking.To illustrate, Howard gives the following analogy:"A stocker at a local grocery store is given the task of stocking store shelves with cans of corn.The stocker removes 10 cans of corn from each carton, places the can on the shelf, and discards the empty carton in a nearby waste bin.And, in addition, loss of or contamination by parent or daughter isotopes would corrupt the data to the point where the method would clearly indicate some sort of problem has occurred.Again, to get a seemingly valid by false date by this method would require an extraordinary conspiracy on the part of nature; the "leakage" would have to occur in just the right way in each and every crystal in the sample, regardless of the specific minerals, to yield a result that looks valid. Carr How about Radiometric Dating which is taken as proof of the age of this that or the other.Curiously this is an abysmal representation of the scientific method and how the use of empirical evidence informs us of the validity of hypothesis and theory in general, and the science of radiometric dating in particular.For information on how the various radiometric methods work and their accuracy I recommend ...

So maybe Howard isn't so doubtful at all, and maybe it's unfair to disparage his attempt to foster critical thinking skills in his students.-Nonetheless, a sincere attempt at good pedagogy or not, he still doesn't seem to understand much about radiometric dating. The fact is that all the other dating methods do give good collaboration of potassium-argon dating.Replication/testing: Too much slippage for this to be reliable from one testing lab to another.You really have only whatever result you are willing to accept, that fits with your other assumptions about time etc.Radiometric Dating - A Christian Perspective, by Dr. Wiens : Radiometric dating--the process of determining the age of rocks from the decay of their radioactive elements--has been in widespread use for over half a century.There are over forty such techniques, each using a different radioactive element or a different way of measuring them.

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