Dating IS iffy, different labs have given different dates... an example of such was in the Olduvai Gorge in Tanzania, where fossils of apelike animals attracted special attention because their finders claimed they were linked to humans.
First measurements of argon in the volcanic tuff in which the fossils were found showed an age of 1.75 million years. But later measurements at another qualified laboratory gave results a half million years younger. then the ages of other layers of tuff, above and below, were not consistent. Sometimes the upper layer had more argon than the one below it. But this is all wrong, geologically speaking”the upper layer had to be deposited after the lower and should have less argon.
You are very confused. At least put some effort into getting your claims coherent and the facts correct
You are referring to the KBS Tuff. It is a difficult-to-date formation comprised of grains from several sources. The original date was 2.6 million years, which excited Richard Leakey because a hominid fossil was found below (not in) the tuff; that would push Man's origin way back, a position he championed. But independent methods of dating (especially pig index fossils) showed that this was unlikely to be correct. So scientists investigated and eventually found a repeatable and verifiable method for separating the components of the tuff, dated them by multiple independent methods (some involving argon, some not) in different labs, and obtained consilient dates around 1.85 million years. All in all a triumph of the scientific method.
KBS Tuff dating
So if the results of radiometric dating are not consistent, then their is something wrong with the method and it cant be trusted.
99.999% of the results of radiometric dating are consistent with other results, both radiometric (based on different and independent isotope systems and methods) and non-radiometric. This is far better than, say, any medical test. Next time your doctor wants to carry out some test tell him/her no thanks; you require 100% consistency and no test provides that, therefore the test is useless.
Edited by JonF, : Add link