Development's Life Cycles / Construction

All-
I love it when you talk IT!
In my opinion, you are over-intellectualizing a very simple process of Project Management, whether it be on the small or large stage. Successful Project Managers are type "A" personalities who bring a sense of urgency and purpose to his Project Management Plan, and he/she executes that plan. It is a very simple process to understand.
Every Team contributing to the Critical Path must deliver to the Project at the required critical time. The Procurement Team's schedule must procure long lead items and perform all the tasks (commissioning and testing) prior to on-time delivery.The Execution Team/Vendors and Suppliers must support all the execution in the team with the CPM required Volumes of Supplies and Workers. The Heavy Equipment Team must supply the correct equipment and Operators to match the CPM. The Project Staff and Project Controls team must supply the support the Execution Team requires to meet the CPM. ( Feedback on Schedule and Cost performance KPI data).
The QC team must ramp up their PQP (project quality plan-part of the Project Management Plan) activities to match the ever-increasing volume of critical path activities. Likewise, the Safety Team must also ramp up.
In summary, I view control of these process as very similar to an Army. The PM is the General who dictate the pace and encourages KPI performance.
In my opinion, the only similarity to the latest popular phrases you IT people like to throw around is the Kaizen principle of Prompt delivery of supplies to the Project as called out in the Project Management Plan.
Waterfall, Agile, Scrum (Do you IT guys ever actually play rugby?) are great to throw around but don't actually apply to my Industry, or the environment we operate in the Field.

Just sayin!

From the Trenches!
N

Looking back at those who contributed to this discussion, it appears I would be the only one that falls under "you IT guys".

This 190 lb, 6-foot, IT guy plays rugby. Do you construction guys play it?

Stephane-
Touche! That makes 2 of us......I was a winger-5'7" 190-pound winger. Were you a Hooker?
Kidding! If IT usurps the SCRUM term, why not the Hooker title? Since the Hooker controls the ball, wouldn't that require a PM in the IT field to actually be referred to as the HOOKER of the team, not the PM?
M