In the future, the ability of a small group, or even an individual, to wreck catastrophic harm upon civilization will become relatively easy, given expected advances in knowledge and technology. To cope with this looming threat, microscopic surveillance 'bugs' (using nanotechnology) are being developed that will be unseen to the eye, and will float on the wind, becoming embedded in our hair and clothes, etc. Trillions will be released into the atmosphere; there will be no privacy, in any form, whatsoever. This could happen by 2020. (What kind of apparatus could keep track of all that data?)

Instead of constructing a reactive fortress, why can't we build a new mind set that would make extreme defensive measures obsolete? I don't want to live on a nightmare planet.