Only two certified crane operators are available citywide for a bridge lift weekend. Why must resource planning explicitly account for that constraint?
Select an answer to reveal the explanation.
Short Explanation
If only two people in town can run the crane, the calendar bends around them—not the other way around. Resource planning has to count those unicorns and book the weekend for real.
Full Explanation
When specialized resources are scarce, planning must quantify availability and place them on the schedule where the work occurs. Assuming unlimited substitutes invents capacity the city does not have and risks a failed lift window. Explicit type-and-count planning surfaces the constraint early enough to resequence or secure coverage. That awareness is part of determining number and type of resources at associate depth.