Depends on what you’re trying to achieve.

Small organizations define efficiency based on time to make number go up/down. Meanwhile, if something bad happens at 2am and no one wakes up - whatever there we’re likely no customers impacted.

Larger organizations are really efficient at ensuring the p10 (ie worst) hires are not able to cause any real damage. Every other thing about the org is set up to most cost effectively ensure least damage. Meanwhile, numbers should also go up is a secondary priority.