An NBC News/Wall Street Journal poll recently asked, "Which concerns you more: the income gap between the wealthiest Americans and the rest of the country, or middle and working class Americans not being able to get ahead financially?" If you understand how the economy works, that isn't just the wrong question. It's probably a meaningless one.
In the next 10 years, the middle class's share of the total economic pie will continue to shrink, while the share going to the very top will continue to grow. But the current trend is not preordained to last, and only the most rigid technological determinist would assume this to be our inevitable fate.