Because they can't move, and if they do, that would be being somnambulist(sleepwalker), they have erratic movement so they can't do tasks efficiently because they don't have their five senses activated:

1-. Sight.

2-. Smell.

3-. Earing.

4-. Taste.

5-. Touch.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence