My favorite HN-friendly analogy: Public transport is circuit-switched like the Bell System (i.e. trains must physically "switch the road" to change track). Pr

My favorite HN-friendly analogy: Public transport is circuit-switched like the Bell System (i.e. trains must physically "switch the road" to change track). Private transport is packet-switched like the Internet. Not a big truck, not a series of tubes, but a series of small trucks :)