in less than half a decade the nikkei dow jones went from under 10,000 to 38,957 back in 1989 and back down again! twentythree years later, the nikkei is still at only 9,110.
imo with continual qe, the dow and the nikkei will both go through the roof and come back down again, in the second half of this decade, when euro issues come to a head and with it a slowdown in chinese us and japanese growth!
just as there was the japenese asset price bubble, where share prices were greatly inflated, imo the us will have an asset price bubble. it will be export lead just, like the rise in the nikkei!