A common rule we should always try to heed is to detect and fix any problem in a production process at the lowest-value stage possible. Thus, we should find and reject the rotten egg as it’s being delivered from our supplier rather than permitting the customer to find it. Likewise, if we can decide that we don’t want a college candidate at the time of the campus interview rather than during the course of a plant visit, we save the cost of the trip and the time of both the candidate and the interviewers.
