Beat the right number
The active workout can place previous performance beside the current prescription. That makes the next target concrete without promising that every session must produce a record.
Keep effort in context
A heavier load at much higher effort is not the same signal as a clean rep added inside the target range. Logging effort helps the later decision retain that context.
Review trends, not one noisy day
Exercise history and weekly volume show patterns across completed training. The coach should use those records and say when evidence is too sparse for a confident change.