the blind leading the blind

US /ðə blaɪnd ˈliːdɪŋ ðə blaɪnd/
UK /ðə blaɪnd ˈliːdɪŋ ðə blaɪnd/
"the blind leading the blind" picture
1.

장님이 장님을 인도하는 격, 무능한 사람이 무능한 사람을 이끄는 상황

a situation where inexperienced or incompetent people are guiding others who are equally inexperienced or incompetent

:
The new manager has no idea what he's doing, so it's really the blind leading the blind.
새로운 매니저는 뭘 하는지 전혀 모르니, 정말 장님이 장님을 인도하는 격이야.
Trying to learn from someone who knows as little as you do is like the blind leading the blind.
너만큼이나 모르는 사람에게 배우려 하는 것은 장님이 장님을 인도하는 격이야.