Thomas and Morris on Radioisotope Dating

The February edition of Acts & Facts is out, and the first article we’ll look at is the “Q&A,” Doesn’t Radioisotope Dating Prove Rocks Are Millions of Years Old?, by John Morris and Brian Thomas (M&T, as well shall call them). The answer they are aiming for is, of course, “no.”

Radioisotope decay rates are renowned for constancy under normal conditions, so this assumption appears reasonable. But two observations and two clues omitted from physics textbook discussions of radiodating show that these radioisotope “clocks” are broken.

The four examples that they give should not be unfamiliar to anyone by this point – we have seen them all many times before. But in the interests of creating a shadow Q&A they are worth looking at again. Continue reading