Carbon dating of god
You start the timer with all the sand on the top and watch the sand pass through a small opening in the glass gradually emptying to the bottom.
The parent isotope would be the sand on top while the daughter would be the sand on the bottom.
There are many geological exceptions to this assumptions also as newly formed volcanic rocks have demonstrated long ages in the scientific literature.
The final assumption predicts that rocks are totally isolated so that there is no outside leaching with other isotopes.
This process of radiometric dating is very similar to an old-fashioned hourglass.
We also have to assume from a creationist perspective that these rates could easily have changed when the universe was expanded, not by the Big Bang, but by God, in the creation of cosmos as stated in Genesis 1. As it states in Isaiah 42:5, “This is what God the LORD says– the Creator of the heavens, who stretches them out, who spreads out the earth with all that springs from it, who gives breath to its people, and life to those who walk on it.” Such spreading out can easily cause time to speed up according to the laws of relativity that Albert Einstein proposed.