Already there is a serious problem caused due to untested technological products like Cells which have proved to be harmful to the consumers. Further with werable computers and virtual reality advances being made at an astronomical rate. New types of crimes like Hijacking the brain of a Human Being and doing various acts with it and showing them a different dream while they go through some other physical process takes place.
I think VR technology is a greater danger to the Humanity compared to Robotic invasion envisioned of the future.
Previous blunders by great intellectuals of developed world includes the Y2K bug which causedbillions of dollars lost due to poor technological prognosis.