The argument for human uniqueness is of mostly historical interest. As we gained more understanding of animal behavior, we learned that their psychology has more in common with us than had been imagined previously.
Rather than thinking of 75 as the time to die, let us continue to re-imagine 21st century life where 75 is a robust time of engagement and work. Perhaps for many even just the start of yet another phase of life.
The difficult-to-notice vulnerability of Heartbleed had been there for years before the greater threat was announced to the general public. Now that everyone knows it exists, companies are scrambling to fix it.
Why am I so optimistic? Because of the wide assortment of technologies that are advancing at exponential rates and converging. They are enabling small teams to do what was once only possible for governments and large corporations.