Read the following context and answer the question.
Context: Each of the senseis has a 20-point scorecard , of which only 1 point is devoted to " accurate technique . " Everything else is presentation : engaging the audience 's attention , making sure everyone can see and understand what you 're doing , selling the impact of the technique , etc . 17 is a passing grade . LJ 's own Katie H. did very well , at least on my scorecard .
Question: Why did they use a scorecard ?
Answer:


They tally points on it while watching the presentations .