I agree. But let's bring in an advocate for the devil: "As if the millions and billions of years of Nature's invention and innovation should be discarded..."

I agree. But let's bring in an advocate for the devil: "As if the millions and billions of years of Nature's invention and innovation should be discarded..." Great. Now I sound like Edmund Burke. Maybe strong would be a better modifier than hard, as it implies a little more flexibility. Nevertheless, I think some ideas are being conflated here: Do strong biological tendencies exist? Can they be hacked or circumvented? Should they be? What's the cost/benefit? Are you willing to make the investment necessary to do so? I favor exploring, and acknowledging where warranted, the hard limits so that we may more effectively and humanely answer these questions.