That's one way to read Tyler Cowen's NYT column noting that wars have often been associated with major economic advances which carries the headline "the lack of major wars may be hurting economic growth." Tyler lays out his central argument:

"It may seem repugnant to find a positive side to war in this regard, but a look at American history suggests we cannot dismiss the idea so easily. Fundamental innovations such as nuclear power, the computer and the modern aircraft were all pushed along by an American government eager to defeat the Axis powers or, later, to win the Cold War. The Internet was initially designed to help this country withstand a nuclear exchange, and Silicon Valley had its origins with military contracting, not today’s entrepreneurial social media start-ups. The Soviet launch of the Sputnik satellite spurred American interest in science and technology, to the benefit of later economic growth."

This is all quite true, but a moment's reflection may give a bit different spin to the story. There has always been substantial support among liberals for the sort of government sponsored research that he describes here. The opposition has largely come from the right. However the right has been willing to go along with such spending in the context of meeting national defense needs. Its support made these accomplishments possible.

This brings up the suggestion Paul Krugman made a while back (jokingly) that maybe we need to convince the public that we face a threat from an attack from Mars. Krugman suggested this as a way to prompt traditional Keynesian stimulus, but perhaps we can also use the threat to promote an ambitious public investment agenda to bring us the next major set of technological breakthroughs.