Why did the physical scaling of the Spinning Jenny necessitate the rise of the factory system?
Answer
The machines became too large and impractical for a domestic home environment
As the design of the Spinning Jenny evolved from the initial eight-spindle model to larger versions featuring 16, 24, or even 120 spindles, these devices grew far too bulky to be contained within a traditional cottage setting. To maximize efficiency and profitability, factory owners consolidated both the machinery and the workforce into central buildings. This centralization replaced the domestic industry, allowed for better control over the labor process, and significantly reduced the costs associated with transporting raw materials between multiple homes.

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