Hand-picked parts to me means that the manufacturing department calls to engineering and says "Help! I've got boards that don't meet spec...again!". The design engineer goes to the line for the umpteenth time, establishes that another marginal design has been discovered yet again and corrective action consists of screening parts that have wide margins in order to make the board work so that the company can ship to recognize revenue. The root cause is never established and preventative action is never put in place because the company is short-staffed and doesn't have a quality culture.
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