supposed c-decay

All such attempts to show the supposed 'c-decay' have involved the researcher cherry-picking observations in support of his hypothesis. In at least one case I've seen, the researcher committed deep intellectual dishonesty and actually reported an erroneous datum specifically to make it agree with his hypothesis.

Modern physics does not support c-decay, nor any mechanism that might support it. There is no experimental evidence that shows it happens, and a great deal of theoretical work that shows it cannot.