Drawbacks of carbon dating
The age of the earth is not “plain” in the Scriptures.
It is also not “main,” in that one’s view of Earth’s age has no necessary implications for one’s view of sin, salvation, morality, heaven, or hell.
It’s important to realize that there is no means to directly measure the age of the earth—this is a calculated number.
One method of determining the age of the earth assumes that the six days of creation presented in Genesis 1 were literal 24-hour periods and that there are no gaps in the chronology or genealogy of Genesis.
The years listed in the genealogies of Genesis are then added to get an approximate time from creation to certain Old Testament figures.
On other topics, however, the Bible doesn’t provide nearly as much information.
Reading the Scriptures carefully, one finds that the more critical a topic is, the more directly the Bible addresses it.
Every method relies on certain assumptions which may or may not be accurate.