Is this about the U.S. or the world? If about the U.S., it might be a
good time to invest abroad.
Its worth pointing out that if the value of your future wages is tied
to the U.S., because of your knowledge and contacts in the U.S., and
if U.S. wages correlate with U.S. stock returns, as they seem to, then
diversification would argue for putting more of your money abroad,
perhaps to the point of holding no U.S. investments.
See: Baxter & Jermann, "The international diversification puzzle is
worse than you think", American Economic Review, March '97, p. 170.
Of course if you're betting instead of investing, then you may prefer
to bet on things you know best.
Robin D. Hanson hanson@hss.caltech.edu http://hss.caltech.edu/~hanson/