Most species tend to last between 2 to 4 million years, though some stick around
for a lot longer and others go much sooner.  Individual species of Homo seem to
range toward the short end of the scale.

If I were a bettor, I'd guess we're likely to be replaced sometime within the
next 3 million years or less.  However, the argument holds whether we are  here
or not.  I'd still want our successors to survive when the time comes.

JimC

Jeff DeMaagd wrote:

> At any rate we don't know if humanity will exist tomorrow.  The chances say
> yes but to rule out the improbabilities, maybe tomorrow life as we know it

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