When you produce only 100 boards a day it's a lot easier to check each one than if you produce 10,000 a day.
The other problem is that people want bargains. If that company still checked every single board, they would have to hire many more workers which will then drive up the price.
The other problem is that people want bargains. If that company still checked every single board, they would have to hire many more workers which will then drive up the price.

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