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To understand how the C-14 clock works and what processes are involved, let us consider the egg-timer.
By tipping the glass when the egg starts cooking, one learns when three minutes are up and the boiling should be stopped.
Thus radioactive dating relies purely on assumptions.
Question: "Is carbon dating a reliable method for determining the age of things?
" Answer: Carbon dating, or radiocarbon dating, like any other laboratory testing technique, can be extremely reliable, so long as all of the variables involved are controlled and understood.
Several factors affect radiocarbon test results, not all of which are easy to control objectively.
Nor can it tell if a much older spearhead was attached to a brand-new shaft.
Radiocarbon dating can’t tell the difference between wood that was cut and immediately used for the spear, and wood that was cut years before being re-used for that purpose.
Artificial introduction of C-14 mainly during the late 50's when we had lot of nuclear tests done, increased the C14 content in atmosphere.