Base120 · Decomposition

Scope Delimitation

DE · Decomposition

Define precise boundaries of what is included versus excluded from consideration

Model code
DE11
Transformation
DE (Decomposition) — Break problems into factors, layers, and independent subproblems.
Priority
11 of 20
Framework
HUMMBL Base120 — 120 mental models across 6 transformations

When to use

"Use before starting analysis or design. Define precisely what is included and what is excluded. Prevents scope creep and makes it clear what is being addressed versus deferred."

Example

"We are redesigning the checkout flow. In scope — cart, payment, confirmation. Out of scope — product pages, account management, order history. Deferred — guest checkout (next phase). The scope makes the project tractable."

Common misuse

"Defining scope so narrowly that the problem cannot be solved within it. If the checkout conversion problem is caused by the product pages, scoping checkout-only guarantees failure."

Also known as

Scope DefinitionBoundary Specification

Related models

P10DE2SY2