Fishbone diagram

Structured root cause analysis for retrospectives.

Problem statement: Project missed its deadline. Six standard Ishikawa categories are explored below — click any cause for a 5 Whys drill-down.
Problem
Drag a slider to represent how much team focus or emphasis that category is getting in your retro discussion. Thicker bones and bigger chips mean more airtime — use it to spot categories the room is ignoring.

What you are looking at

Six category lanes — People, Process, Tools, Environment, Materials and Measurement — each with its own row in compact view and its own card in expanded view. Compact view shows causes as readable chips with full text. Expanded view shows all causes across all categories simultaneously. Click any cause to drill into its 5 Whys chain. The simulator tab weights each category to surface team assumptions. Switch between four pre-built templates covering late delivery, high defects, budget overrun and team morale.

What most PMs miss

The fishbone is almost always built in a meeting with the loudest voice dominating. People and Process bones fill up while Tools, Environment and Measurement stay empty — not because the problem lives only in people and process but because those are the easiest categories to populate without data. A well-run session assigns a small group to each bone before the meeting so every category gets genuine investigation.

The expert tip

Run the 5 Whys on every cause that appears in more than one category. If poor communication appears under People, Process and Environment it is not a coincidence — it is a signal that something structural is generating multiple symptoms simultaneously. Fix that one root cause and several fishbone branches clear at once. That cross-category pattern is invisible unless you build the fishbone first and look for it deliberately.