-------------------------------------------------------
> JonnyMcA Wrote:
> --------------------------------------------------
> [SNIP]> > The 2720 and 1142 BC NH4 events could be
> entirely
> > uncorrelated with each other, being part of
> the
> > stochastic influx of cosmic bodies, and the
> Maya
> > could then have constructed a calendar from
> the
> > temporal spacing. Indeed, there is no
> requesite
> > that they had to remember the exact interval
> > between them. The peaks could be 1575 years
> apart
> > but the Maya could have remembered that it
> was
> > 1577. [SNIP]
> >
Bernard wrote:
> >> The fundamental problem with this whole thing is
> that there was NO Maya calendar in either 2720 or
> 1142. The Long Count calendar dates to about
> 400-300 BC.

The whole suggestion seems vanishingly flimsy to me. The scenario requires that the preliterate Maya ancestors began assiduously counting the years in 2720 BC, and kept the count going with astonishing accuracy for over a millennium and a half, through many generations, disasters,other notable events, innovations and culture change; made the connection with a similar event in 1142 BC,and calculated the interval between the two; and then sat down some seven centuries later to work out the complexities of the Mayan calendar based on that interval. Prima facie, that does not sound sensible to me.