If you ask which of the scenarios I think is most dangerous, though, I will give a different answer. In that form of the question, I regard a nuclear attack, terrorist-generated or otherwise, as the most threatening combination of likelihood and long-term damage to modern life today.
John L. CastiTo function effectively, the system scientist must know a considerable amount about the natural world AND about mathematics, without being an expert in either field. This is clearly a prescription for career disaster in today's world of ultra-high specialization.
John L. CastiThe global financial system consists of firms in the financial services sector - banks, hedge funds, insurance companies and the like - and various governmental agencies who are charged with regulating these firms.
John L. CastiOnce the reality sets in of a superhuman intelligence being in control of every aspect of the infrastructures we rely upon for everyday life, we will simply have to try to come to an accommodation with that entity.
John L. Casti