| Useful ambition and current means | The requested benefit can be valuable while a required contribution is unavailable. |
| Several recipients | The sponsor, performer and beneficiary may need different results and hold different rights. |
| Trust and accountability | Candid discussion can improve help; undisclosed reporting can make it unsafe or misleading. |
| Expert help and retained responsibility | A provider may supply a difficult contribution without acquiring the recipient’s decision authority. |
| Clarity and discovery | Enough must be agreed to begin; some target and support questions can only be settled through use. |
| Simple entry and consequential commitments | A short conversation can suffice for ordinary help, while some undertakings require formal protection or contract work. |