It's really fun when they get into the computing requirements of planning an economy using the Harmony algorithm/neural network. They keep talking about things in millions of operations per second and how a super computer could solve a large economy in about 10 minutes.
When you take these numbers now and apply them to current consumer grade chips, you could take their exact model and solve an economy with several million inputs/outputs in roughly 1 second. Compared to the 2-10 weeks it would take on a 68020.
It's really sad that the mass adoption of computing has led to things like NFTs and Crypto Currency. Just absolutely wasted operations that do nothing but waste means of production and fractional products. Those trillions of operations could be going towards simulating production goals in central planning. 1, 5, 10, and 15 year plans could be generated in seconds now and presented to all for vibrant democratic input and decision making, instead were using deterministic machines to recreate the chaos of market systems and the runaway crises that come with them.
That's not really how it reads at all. They definitely dive pretty deep into planning systems and mathematics, but they also make sure to direct you to other authors who do more criticism of Capitalism. TaNS is meant to be a pretty dry technical exploration of the types of mechanical/information systems needed to maintain a labor voucher system. That being said there's a decent amount of exploration of how planning systems like this would be implemented and what the actual structure of the society that would use them would need to look like (they focus heavily on feminism and abolition of domestic labor/partiarchy with communal family structures).
It's definitely not like most leftist theory that spends a majority of it's time pointing out the flaws and problems with capital and minority exploring how socialist planning would actually be implemented. This is a book written specifically for the future, specifically to be unearthed after a revolution and used to help build a system of central planning that works.