I think they're in a time after the purge and before the Others
inhabit Dharmaville. I'm pretty sure Chang's baby is a boy (I think
they say "he" to refer to the baby). It could be though that Mr. Paik
has some connection with Widmore, and that Paik Industries and
Widmore's business (is it shipping?) and Oceanic and Ajira are all
connected (also, we're lead to believe that since Ben's lawyer, Mr.
Norton, also works for Oceanic, Ben could be involved in the airline
industry). Interesting then that there's airline, shipping, and
automobiles. Planes, boats, and cars. And time travel. Stretching it,
but maybe some connection there.
I don't think Amy would go over to the side of the people who killed
Paul and almost killed her. She seems pretty anti-hostiles, especially
with her wanting Sayid dead. I have a feeling Ethan (who is 15 when
the purge happens) is either stolen by the Others and raised by them,
or Ben spares all the kids during the purge, and uses them to boost
the Others' membership? Ben's quote does hint that there were some
people who defected from Dharma...