According to the text, why is the need for skilled tradespeople sustained despite new design concepts?

Answer

Because machinery needs to be built, installed, or maintained reliably for manufacturing

A new sustainable design is conceptually brilliant but useless if the machinery needed to manufacture and fill it cannot be built, installed, or maintained reliably, highlighting the bedrock role of skilled trades.

According to the text, why is the need for skilled tradespeople sustained despite new design concepts?
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