It works because people consent to be governed, and accept the rule of law.
"The Sovereign, having no force other than the legislative power, acts only by means of the laws; and the laws being solely the authentic acts of the general will, the Sovereign cannot act save when the people is assembled.[URL="http://en.wikipedia.org/wiki/The_Social_Contract#cite_note-1"][/URL]"
It's like all Rousseauian Social Contract shit etc....
"The Sovereign, having no force other than the legislative power, acts only by means of the laws; and the laws being solely the authentic acts of the general will, the Sovereign cannot act save when the people is assembled.[URL="http://en.wikipedia.org/wiki/The_Social_Contract#cite_note-1"][/URL]"
It's like all Rousseauian Social Contract shit etc....