Name the contradiction at the heart of the problem

State exactly which parameter you need to improve and which parameter gets worse as a result.

Why it works

TRIZ distinguishes "technical contradictions" (improving A worsens B) from "physical contradictions" (a parameter must be both X and not-X at the same time). Naming the contradiction precisely does two things: it prevents pseudo-solutions that optimize one side at the other’s expense, and it lets you consult TRIZ’s contradiction matrix to find which inventive principles have historically resolved that specific trade-off. The act of articulating the contradiction often reveals that the trade-off was assumed rather than fundamental.

How to do it

1. State what you want to improve (e.g., strength of a component).
2. State what gets worse when you do that (e.g., weight of the component).
3. Write: "If I improve [X], then [Y] gets worse. I need [X] to increase AND [Y] not to worsen."
4. Check if this is a physical contradiction: "I need [X] to be both high and low (or present and absent)."
5. Use this framing as the input to any inventive-principle lookup or creative session.

Evidence

Contradiction identification is the foundational move in TRIZ. Altshuller’s patent analysis showed that most non-trivial inventions resolve a contradiction rather than accept it. This is practitioner-derived and observational; controlled comparisons against other problem-framing methods are not established. (observational)

TRIZ was developed primarily in engineering contexts; transferring it to organizational or personal problems requires translation, and the contradiction framing can feel forced for non-technical domains.

Common mistake

Describing the contradiction vaguely ("it’s too slow and too expensive") rather than naming the specific parameters and their directional relationship, which makes the TRIZ matrix unusable.