According to the text, what crucial realization underpinned the success of Edison's inventions like the light bulb?

Answer

Individual inventions were only as good as the system built around them.

Edison's unique contribution was realizing that inventions required a complete system, such as the network of power generation and distribution supporting the light bulb, to be revolutionary infrastructure rather than just a novelty.

According to the text, what crucial realization underpinned the success of Edison's inventions like the light bulb?
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