Define “Unreliable”

Given the opportunity, no Young Earth Creationist will resist a chance to attack the reliability of radioisotope dating. Certainly not the ICR’s Brian Thomas, who today tells us that Fluctuations Show Radioisotope Decay Is Unreliable.Halflife sim from wikipedia

A few years ago it was shown in a study that the rate of decay of radioactive material fluctuates slightly between the seasons. since then, this has been confirmed a couple of times, the most recent time in a lead-lined container to minimise environmental effects. Naturally, the creationists are crowing. However, they don’t cover everything.

For starters, this effect is tiny. It’s literally a case of it being so small we couldn’t have detected it before. And it cancels itself out – the increase in one season is balanced by a decrease in another. Continue reading