critical-path-planning

Productivity

Identify the shortest execution path via CPM forward/backward pass, resource leveling, and buffer insertion

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Strategy: Critical Path Planning

Key Question: What is the shortest path?

Methodology

Critical Path Method (CPM) adapted for experiment execution:

Activity Listing — enumerate all implementation tasks
Dependency Sequencing — determine predecessor/successor relationships
Duration Estimation — three-point PERT (optimistic, most likely, pessimistic)
Forward Pass — calculate earliest start/finish for each activity
Backward Pass — calculate latest start/finish, identify zero-float path
Resource Leveling — resolve resource conflicts on parallel paths
Buffer Insertion — add project buffer (Critical Chain method) at convergence points

Execution Flow

activity-listing
    → dependency-sequencing
        → duration-estimation
            → critical-path-calculation
                → [resource leveling if conflicts]
                    → [buffer insertion]
                        → OUTPUT: annotated task graph with critical path highlighted

Budget Gate

Step	Max Budget	Output
Activity listing	5%	Complete activity list
Dependency + Duration	10%	Sequenced, estimated network
CPM calculation	5%	Critical path + float table

Key Decisions

If critical path is too long: look for fast-tracking (parallel execution) or crashing (more resources)
If resource conflicts exist: prioritize critical path tasks over float tasks
Buffer size: typically 50% of critical chain duration (Goldratt's recommendation)

Available Tactics

Optional, no fixed order; the final leaf is always a sop.

Tactic	When to use
task-decomposition	Orchestrate the breakdown of experiment design into sequenced, estimated, and formatted task plan

Available SOPs

Optional, no fixed order; the final leaf is always a sop.

SOP	When to use
activity-listing	Enumerate all implementation activities from an experiment design
critical-path-calculation	CPM forward/backward pass with float calculation to identify the critical path
dependency-sequencing	Determine task dependencies and execution order
duration-estimation	Three-point PERT estimation for implementation activities