The main driving force behind productivity increases is *technology*.


Dave wrote:
I think that's true. But when we talk "technology" we're talking capital
investment.

Huh?

... If you decrease the tax on
returns from capital investment you increase the incentive to make that
investment. Basic economics.


True enough, if a bit overly simplistic. But I think you should look up
the basic definition of "technology" in the context of economics. I'll wait.

DSK