But how can urbanates simulate the adventure, variety, and thrill of a city?
That would be what the city 'theme parks' would be for.
The way a city never stops moving,
Sorry; what do think happens in an urbanate, that everyone stays in their rooms and just sits all day? If anything, urbanates would be the ones that "never stop moving", because the Technate runs 24/7, whereas cities grind to a halt after sundown because everyone sleeps and works at virtually the same time.
the way the flow of ideas and projects are everywhere. You don't see this level of dynamic creativity anymore
Exactly what happened in cities at any point in history that leads you to believe that the same couldn't be done in an urbanate? If anything, cities impede these things, with all the inefficiency, traffic and other difficulties travelling, crime and danger, and needing to pay for luxuries that allow one to participate in the "flow of ideas and projects". Whereas in an urbanate anyone could participate in virtually any project anywhere, and information would be far more easily found and shared, unhindered by the burdens of scarcity, inefficiency, proprietary practices, misinformation, politics, and advertising. I know that it's difficult to compare things you already know (cities) with something you have seen yet, but this is why all the parts of Technocracy work together to create these fantastic effects on human society.
The question is how which is something I can't seem to answer. However if an urbanate would have to attempt to do so, this urbanate would be organized based on communities rather than strict organization.
I really don't know what you are assuming here about urbanates. "Organized based on strict organization"? Are you picturing a Borg community or something? Urbanates are simply the best design to allow people to do what they want to do in the most efficient manner (meaning best effect for the least resources and effort). The people
in the urbanates would not be "organized" at all, except where perhaps it came down to how they work with each other in regards to the Technate (i.e. their jobs). Where and how they live would be entirely up to them. They would not even be "organized based on communities" as you suggest, because that sounds forced to me. Communities would form naturally, based on locale, circumstance, and mutual interests.
So really, what specifically
do you picture happens, can happen, or has happened in cities that you don't think could happen in an urbanate? Because the only things that would be missing would be things people wouldn't want anyway.
"Only when there is zero opinion in the arrivation of social decisions in the operation of a technological totality will there be a maximum of personal selectivity, choice, and opportunity." -Howard Scott