the relationship between the Time-Cost-Flaw is a tight relationship, inextricably linked.Time too short will not be guaranteed to be quality, high efficiencyLow cost will make impossible to pay for manpower, manpower so will cause a delay the progress or quality will go downThe quality is guaranteed by time and cost, however there are still many cases reach the satisfaction of time and cost, but the quality is still bad (probably due to human factors or other objective reasons not controlled)Limitations in terms of time but still want the quality to be sure how the cost will definitely soar (outsourcing, third party)For example: If a project is executed in 6 months, but if to the last stage of customers no longer pay to continue, then the project will probably be forced to pause, or can still be release but will reach extreme quality.
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