According to the text, how long must a skill set generally remain unchanged to serve as a strong indicator it might be time to look externally or push for change?

Answer

Two or more years

One indicator suggesting a need for change is when the core business challenges or tools utilized daily have remained essentially unchanged for a period of two or more years.

According to the text, how long must a skill set generally remain unchanged to serve as a strong indicator it might be time to look externally or push for change?
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