In every Adviser-Advisee interaction, giving an “out” makes the advice in disagreement more palatable and maintains the relationship.
“To achieve my goal, I want to do X”
“For reasons A, B, C, you should not do X, but instead you could do Y”
“So how should we do X?
“I don’t believe X is the right thing to do for reasons A, B, C. But if you insist, by doing Y, you get X.”
A, B, C is the carefully considered and presented argument that hopefully changes minds.
But if it fails to change minds, then give “Y”; it is the ‘out’.