Radiometric dating techniques are thus based on sound scientific principles, but rely on so many basic assumptions that Bible believers need not have their faith shattered by data derived from these techniques. What do rock layers on the Earth's crust tell us about our origins and the age of the earth? It is assumed that we are dealing with a closed system—no loss of either parent or daughter elements has occurred since the study material formed.No scientist can guarantee that any sample can be considered a closed system unless it was isolated from its environment when it was formed.A rock sample from Nigeria was dated at 95 million years by the potassium-argon method, 750 million years by the uranium-helium method, and less than 30 million years by the fission-track method.If the clock is not set to zero when a deposit forms, then there can be no starting point from which to calculate the age of a deposit.A further example from a lava flow off the coast of Hawaii shows similar discrepancies.If dated with the carbon-14 method, the flow appears to be less than 17,000 years old, but dating with the potassium argon method gives dates of 160,000 to 43 million years.
Thus radioactive dating relies purely on assumptions.Recalculations moved the promised second advent from March, 1843 to March, 1844, and then to October of that year. After the "Disappointment of 1844" Miller's following fell apart, with most of those who had looked to him returning to their respective churches before his death in 1849.But other disappointed followers kept the movement alive, although in fragmented form.Specimens would then look much older than they actually are.d) Even if the rate of decay is constant, without knowledge of the exact ratio of carbon-12 to carbon-14in the initial sample, the dating technique is subject to question.Many examples from literature show that the zero-reset assumption is not always valid.