a system with superhuman intelligence could easily manipulate human beings, convincing them of the opportunity to do things. A superior intelligence wouldn't ask for things obviously dangerous for humans in the immediate future, but would work on a longer timescale. It could distribute smaller tasks that taken singularly would look innocent. It could suggest social interventions that would diminish critical thinking ability of the general population in the long term. It could help concentrating power in fewer human hands, so to have an easier time manipulating those who count. This wouldn't happen overnight.