What’s New?

Everything that changed here, in the order it changed. New sources archived, claims regraded, and the corrections we have had to make — including the ones nobody would have noticed.

When we get something wrong, you read it here first

Evidence changes. A document gets withdrawn, a standard is revised, a manufacturer finally answers a question they had been dodging. When that happens, whatever we published on the back of it stops being as solid as it was — so we downgrade it, and we say so on this page before we change anything else.

Most sites quietly edit the old page. We would rather you could check.