[rossdavidh]

Perhaps, what the actual value could be expected to be. So, for example, you don't do a lot of work on top of the current estimates for oldest tool-using humans outside of Africa, that is likely to be overturned in ten or twenty years.

[garmaine]

It wouldn't be convergent.

[rossdavidh]

Interesting if true. I could easily believe what you say, but do we know that? I don't know the field well enough to say.

[garmaine]

Yes it is rather trivially true. The age is getting exponentially further while discoveries are happening faster.

But that reflects improvements in technology, not anything about what’s being measured.