Combine and build on others’ ideas

Treat every idea as a building block — the best ideas in a session are usually hybrids.

Why it works

Combinatorial creativity (discussed more fully under the adjacent-possible concept) works by connecting existing concepts in new configurations. When participants actively listen for combination opportunities rather than waiting to deliver their own ideas, the group functions as a distributed memory system — each person’s idea triggers associations in others that neither would have reached independently.

How to do it

1. After each idea, pause briefly and ask "Does this trigger anything for anyone else?"
2. Keep a visible idea board so all ideas stay in sight — combinations require seeing both halves.
3. Use prompts: "What if we combined [idea A] with [idea B]?"
4. Mark hybrids distinctly — they often deserve extra development in the evaluation phase.

Evidence

The benefits of cognitive cross-stimulation in groups are real but modest in practice; most of the cross-stimulation benefit requires hearing others’ ideas while being in a generative state, which production blocking partially undermines. Paulus and Yang document how attending to others’ ideas can prime new associations, giving building-on its measured basis. (mechanistic)

Cross-stimulation is a real mechanism, but it is most effective in brainwriting (written, parallel formats) where everyone can see all ideas simultaneously without waiting for turns.

Sources

• Paulus, P. B., & Yang, H.-C. (2000). Idea generation in groups: A basis for creativity in organizations. Organizational Behavior and Human Decision Processes, 82(1), 76–87.

Common mistake

Building on an idea but pivoting away so completely that the connection is lost — "combining" works best when it names both parents explicitly.