Trim components to find what you can remove

Systematically ask which components in your current solution could be removed if another component took over their function.

Why it works

TRIZ "trimming" is the systematic removal of system components by redistributing their useful functions to remaining components. It forces a shift from "what does each part do?" to "which parts are doing redundant, unnecessary, or delegatable work?" — a perspective that reliably surfaces simplifications and cost reductions that incremental thinking misses. Simpler systems also fail less.

How to do it

1. List all components of your current solution or process.
2. For each component, ask: "What useful function does this perform?"
3. Ask: "Could any other existing component take over this function if it were slightly modified?"
4. Remove components whose functions can be absorbed and redesign around the trimmed system.

Evidence

Trimming is a practitioner technique from later TRIZ development; its efficacy is supported by engineering case studies and practitioner reports. No controlled experiment has compared it to alternative simplification methods. (anecdotal)

Trimming is most naturally applied to physical or process systems; applying it to social, organizational, or personal problems requires creative translation.

Common mistake

Trimming functions rather than components — cutting what a system does rather than asking whether the same function could be performed more simply.