Only in a legal sense are they different cities. I mean you could legally declare that my legs and upper torso are different people, but it would be silly. I

Only in a legal sense are they different cities. I mean you could legally declare that my legs and upper torso are different people, but it would be silly. I realise there's history and San Francisco wasn't always joined to San Jose by unbroken urbanity, but arbitrary legal structures should keep up with geography.