As production becomes increasingly clean and knowledge-based, as our urban economies tip dramatically to service industries, as racism and ethnic animosities ebb, and as the model of mixed use becomes more and more persuasive and visible, cities are in a position to dramatically rethink zoning as a medium for leveraging and usefully complicating difference, rather than simply isolating it.
Raskin, in his essay on variety, suggested that the greatest flaw in city zoning is that it permits monotony. I think this is correct. Perhaps the next greatest flaw is that it ignores scale of use, where this is an important consideration, or confuses it with kind of use.
Work uses suggest another bugaboo: reeking smokestacks and flying ash. Of course reeking smokestacks and flying ash are harmful, but it does not follow that intensive city manufacturing (most of which produces no such nasty by-products) or other work uses must be segregated from dwellings. Indeed, the notion that reek or fumes are to be combated by zoning and land-sorting classifications at all is ridiculous. The air doesn’t know about zoning boundaries. Regulations specifically aimed at the smoke or the reek itself are to the point.
The best way to experience a restaurant, I have always felt, is by eating exactly what it wants to feed you. I do not want choices. I want the best thing. A restaurant might have five or ten best things, but it cannot have 45. There are many infuriating things about the world, but one of the more fixable is the sensation of acute regret from having ordered wrong. Why are there possibly wrong orders? Recently, I was at a fancy restaurant with great pastas and bad pizzas. So cut the pizzas!
A kitchen that focuses on its strengths turns out consistently excellent things, even if that results in fewer total things.