0–34: Manageable
The human terrain around this decision is navigable: few approvers, no hidden vetoes, and interests that broadly point the same way. Complexity this low is worth confirming rather than celebrating, because the most common scoring error is counting only the stakeholders you already know about.
35–64: Demanding
This decision has enough moving human parts to fail on coordination alone, even if the underlying choice is right. In this band the danger is uneven attention: the loudest stakeholders get managed while the decisive ones, often the quiet veto holders, get a briefing pack and an assumption.
65–100: High complexity
The stakeholder landscape is itself the main risk to this decision: multiple vetoes, conflicting incentives, history between the parties, and a timeline lashed to other people's decisions. Plans of this shape rarely fail in one dramatic meeting. They dissolve across many small delays that each look reasonable.