Fear may be harmful for creative work. At the very least it is not obvious whether threatening to fire/firing say 10% of under-performers would improve product

Fear may be harmful for creative work. At the very least it is not obvious whether threatening to fire/firing say 10% of under-performers would improve productivity for complex tasks. There can be other ways to make people productive e.g., "psychological safety" https://rework.withgoogle.com/blog/five-keys-to-a-successful-google-team/ https://rework.withgoogle.com/blog/five-keys-to-a-successful...