Even looking at geology alone, it is evident from the using a young earth. And, although you can come up with gross errors using radiometric dating, by and large, the millions of dates that have been accomplished lend support to their accuracy, granting, of course, a large margin of error.
These "millions" of semi-accurate dates have correlated throughout the stratigraphic layers of the earth. Are they usable for giving a rough estimate of age..
After a short argument, the author gives another example, that of lava from the Grand Canyon, giving an error of 270 million years. Geologists say the lava in question is 1.2 million years old..other words, they know when to ignore the radiometric dates. It doesn't mean "all dates are wrong." Remember, context. They claim no source of coal has been found that completely lacks C-14. It is made of carbon...given the amount of carbon in coal, I would expect to see a trace amount of carbon-14 even in samples that are millions of years old.
(Beyond about 60,000 years, the C-14 becomes indistinguishable from the background radiation.) Why was supposed 230 million year old coal dated at 33,720 years? Supposedly, "accompanying checks" showed it was not due to contamination... After all, to say that the lab did not contaminate the specimen proves nothing.
Yes, its true, the person using these dates must make unprovable assumptions, such as the three listed.
If you are in the middle of space, what is a "day." If you are eternal, what meaning does time have? Before we go on..thinking "context." We can't only rest on radiometric dating.
Keep considering the rock layers, which can't be laid down in a global flood.
Job 12:8 says "speak to the earth, and it will teach thee." Secular and Christian scientists, outside of a religious framework, have examined God's creation, and it says, "I'm 13.7 billion years old." Nowhere in the Bible does it state that the days of creation are 24-hour days.
Young earth creation science advocates will argue over the correct translation of "day." The translation of "day" is irrelevant. Only human arrogance would insist on limiting God, an infinite being, to a finite 24-hour day.
If there are possible discrepancies, how can I accept these dates as reliable?