Is 'That is nonsense, of course; but even if the users remain keenly aware that 1669 is the date only of the earliest written evidence, of what use or importance is that to them?' a fitting logical lead-up to 'What value is it to the users if they know that 1669 is the date of the earliest written evidence?'
That is nonsense, of course; but even if the users remain keenly aware that 1669 is the date only of the earliest written evidence, of what use or importance is that to them?###What value is it to the users if they know that 1669 is the date of the earliest written evidence?