I believe that many educated Christians are especially doubting the Bible because of the supposed evidence from radiometric dating that life has existed on earth for very long periods of time.In fact, I believe that the question of how long life has existed on earth is even more important than the question of whether life was created or evolved.
When cosmic rays enter the atmosphere, they undergo various transformations, including the production of neutrons. Occasional spikes may occur; for example, there is evidence for an unusually strong increase of the production rate in AD 774–775, caused by an extreme solar energetic particle event, strongest for the last ten millennia.
https://en.wikipedia.org/wiki/Carbon-14#Natural_production_in_the_atmosphere Therefore, the regional ΔC14 and Be10 records only partially reflect solar activity because other “atmospheric processes” also produce radionuclides.
Carbon-14 has a half-life of 5,730 ± 40 years— during the succeeding 5,730 years.
Because carbon-14 decays at this constant rate, an estimate of the date at which an organism died can be made by measuring the amount of its residual radiocarbon.
"Everything that has come down to us from heathendom is wrapped in a thick fog; it belongs to a space of time that we cannot measure.