Two writers, one subject, and neither edited the other's half
How it works
We each wrote four thousand words on the same question without seeing the other's draft. Both are published unedited and in full.
Where we agree
On almost all of the facts, which was itself a surprise. The disagreement is entirely about what those facts mean.
Where we do not
On whether the decline was inevitable. That is set out in a short joint note at the end, which we did write together.
