The influence of epigenetics on an individual's behavior should also be of interest.
For example, if urban youth who were exposed to leaded gasoline pollution in the 1960s tended to be more violent as adults, will their grandchildren also be more violent in adulthood -- because one or more lead-exposure epigenetic traits are inherited?
A more powerful China is good for the US? Nonsense. A more powerful China would not be more likely to control its world-leading greenhouse-gas emissions.
Furthermore, a more powerful China would not be more likely to stop financing North Korea's belligerence. China will continue financing North Korea's aggression because China finds it expedient to intimidate its neighbors.
ECB quantitative easing? What about Europe's widely hated austerity programs? And what about the weak EU members being deprived of currency flexibility, as they are constrained by the common euro currency they have adopted? These factors make Europe an inappropriate example for comparison with Japan.
As for the USA, QE seems to have at last jump-started the real estate market, which should make a huge difference for US banks, and the economy as a whole.
Also, if QE has sustained the economy while US consumers de-leveraged, all the better. Anyway, American consumers need to spend less on Chinese imports.
Sustained American QE should eventually force the Chinese to value the yuan more fairly against the US dollar, which should reduce Chinese imports, and support US domestic job growth. Hence, QE is good for the USA. So how would it be bad for Japan?
Abe's QE will devalue the yen, and thus he will have won the biggest battle. The high yen has been the root of Japan's economic problems for years. A lower yen will make Japan's products competitive again, and will boost domestic employment. Clearly, Abe is on the right track.