When Bessemer developed his method of making steel the use of iron ore grew and so did making railroads, multistory buildings, and bridges.
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One technique that Paine uses to emphasize his main message would be hyperbole.
Patience
Continuous learning and thinking until high art, high Science and high culture become one.
How you do a quality check depends on what you're making. If you're making some type of food/drink, tasting it would be one type of quality testing. Why is easy - to have happy customers. If what you deliver don't meet the expectations, then people will get disappointed and perhaps even angy at you.
Southeast Asia and that is one reason the Vietnam war took place.