In this context, a "doer" might commit to an agenda, making ongoing decisions that furthered accomplishment and success on that agenda. While their nominal role is to decide, the decisions they make are organized to effect some end.

In contrast, a "discusser" or "decider" makes decisions in order to satisfy the social role of making decisions, but often with a lack of surety, clarity, follow-through or commitment. Perhaps in fear of missing some greater opportunity, or fear of being credited with some failure, their decisions are not organized in a way that actually effects some end.