The blunted edge

It was pointed out to me yesterday by a real estate agent from the Pacific North West that the US is taking its lead from Europe on sustainable building methods all because the penalties for developing new systems and products are far more severe in the US if they go wrong in some way. This threat of litigation is blunting the edge of innovation, the desire to take risks in new areas. It is as though they have signed up en masse to the Hippocratic oath - "above all do no harm".