What do you think of this article: Do you scrutinize your beliefs? We see things differently, is this article an honest assessment?
RADIOMETRIC DATING: FLAWS OF PRESUMPTION – Evolution is a Myth
An article full of the same misunderstandings and lies that were presented by creationists 40 years ago. Do you want me to go through the issues one by one?
The most important one is the constancy of the rate of radioactive decay. This is tested by considering the conditions under which that rate *can* change. What we know is that for the nuclides used in dating, the decay rate doesn't change unless the pressure and temperature are large enough to strip the electrons from atoms. In other words, you need temperatures of thousands of degrees for this to happen.
The reason? The nucleus of the atom is at the center of the atom, protected by the electrons surrounding it *and* the positive charge of the nucleus prevents any interaction with other things unless those electrons are stripped away and the temperature is very high.
So, it is fine to claim that it is an assumption that the rates do not change. BUT, if you want to say that this happens in reality, you need to demonstrate it. And, at that point, the evidence shows the creationists are simply wrong.
Now, if you want, we can go through other specifics (unusual age to a lava flow, for example, or unusual age for modern clams). And we can discuss how scientists actually work to prevent exactly those types of errors.
No method is reliable if a fool is conducting it. Creationists tend to not understand what they are doing and misinterpret their results because of basic errors that no real scientist would make.