Why did agriculture mechanize and not…

On her YouTube channel, Belinda Carr poses an interesting question: why did agriculture mechanize (ie: replace manual labor with machine labor), but not construction? Construction is often contrasted with factory-based production, but in many ways agriculture is a better comparison. Both construction and agriculture have traditionally been labor intensive activities. Both take place outdoors, exposed to the elements. And both require the work to be spread over a large, unstructured environment (unlike factory production, where the entire process can be tightly controlled).

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