Hayek not only told us that it was impossible for a central authority to manage everyone's affairs. He also told us (with others) that spontaneous order would allow us to manage our collective affairs with greater success.
This video demonstrates how people can get along, without being told what to do:
This reminds me of the video I made of UC Davis students biking around a traffic circle (lost somewhere :(, in preparation for a paper I wrote on traffic circles [PDF].
Bottom Line: Sometimes engineers, politicians and bureaucrats do more harm than good, trying to "help" us.