Changes

::::As the ''Nature'' article states, the minimum age of those crystals was determined using two isotopes of the same element.  Don't you think that it's likely that even if some process existed (other than radioactive decay) that caused lead to enter or leave those crystals would act on both isotopes of the lead?   

::::As the ''Nature'' article states, the minimum age of those crystals was determined using two isotopes of the same element.  Don't you think that it's likely that even if some process existed (other than radioactive decay) that caused lead to enter or leave those crystals would act on both isotopes of the lead?   

::::I think it is very likely that these crystals have existed on Earth for more than 4 billion years, and I think anyone must acknowledge that there is at least a possibility that this is true.  If you don't think this discussion belongs on the Young Earth Creationism article (though I believe it is responsible to include evidence that refutes YEC if such evidence is valid), then would you object to its addition in the [[Age of the Earth]] article? --[[User:MichaelK|MichaelK]] 11:28, 12 May 2008 (EDT)

::::I think it is very likely that these crystals have existed on Earth for more than 4 billion years, and I think anyone must acknowledge that there is at least a possibility that this is true.  If you don't think this discussion belongs on the Young Earth Creationism article (though I believe it is responsible to include evidence that refutes YEC if such evidence is valid), then would you object to its addition in the [[Age of the Earth]] article? That arcticle includes a brief mention of some potassium-argon dating experiment, but it doesn't explain the process at all.  --[[User:MichaelK|MichaelK]] 11:28, 12 May 2008 (EDT)