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Among Australian cities, Melbourne is famous for its grid, laid out by a man named Hoddle in 1837. The above is one of the surveyor's chains he used in marking out the blocks. Originally there were to be twenty four big square blocks, 3 by 8, barely bisected by narrow lanes allowing the backdoor provisioning of the houses and businesses fronting the main streets.
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The thing about grids is you don't know how they'll fill out, or even if. By laying out a grid rather than a system with centers or letting the lay of the land carve out your spaces you leave it to the future to shape your city, maximizing in advance the possibilities of communication and movement between sections. (Hoddle had no way of knowing that the city would basically grow along the north-south grid - diagonal in his picture -, leaving the now CBD stranded on a permanent tilt.) The uncertainty is intoxicating and terrifying... and the only thing certain is the uncertainty, for the communication and movement doesn't stop when the grid fills up but just gets more energetic.
Rather like if you planned to write a book with seven chapters, each divided into four subsections, and hoped that each of the twenty-eight resulting blocks would be equally interesting - or at least equally easy to fill - long before you knew who would be moving in...!