Make a recommendation people can inspect
Name the requirement that matters, compare a plausible alternative, and state the cost you are choosing to accept. A recommendation is more useful when someone can challenge its assumptions.
As your scope grows, explaining code is only part of the job. Other people need to understand why a decision fits the constraints, what risk it creates, and which signal would make you revisit it. Your explanation helps the team make a decision that survives beyond the meeting.
Take a senior engineer challengeName the requirement that matters, compare a plausible alternative, and state the cost you are choosing to accept. A recommendation is more useful when someone can challenge its assumptions.
When an estimate changes, distinguish new scope, new evidence and estimation error. Explain the impact and offer a checkpoint rather than defending the old date.
In review, explain the risk behind your concern and separate a blocker from a preference. Give the author a way to act and a principle they can reuse.
Take a recent design decision and explain the strongest case for the option you rejected. Then explain why your actual constraints led you elsewhere.