If all my bridge coach ever told me was that I was ‘satisfactory,’ …

If all my bridge coach ever told me was that I was 'satisfactory,' I would have no hope of ever getting better. How would I know who was the best? How would I know what I was doing differently?
If all my bridge coach ever told me was that I was ‘satisfactory,’ I would have no hope of ever getting better. How would I know who was the best? How would I know what I was doing differently?