Of course, marginal effects cannot be ruled out: small changes in long-term interest rates from QE3 may lead to a little more investment; some of the rich will take advantage of temporarily higher stock prices to consume more; and a few homeowners will be able to refinance their mortgages, with lower payments allowing them to boost consumption as well.
当然，边际效应是不可忽视的：QE3所带来的长期利率的微小变化可能会催生更多的投资；一些富人会利用暂时性的股票价格高企更多地消费；也有一些家庭能够得以进行按揭再融资，下降的按揭负担则有助于刺激他们的消费。