the blind leading the blind
US /ðə blaɪnd ˈliːdɪŋ ðə blaɪnd/
UK /ðə blaɪnd ˈliːdɪŋ ðə blaɪnd/

1.
盲人摸象, 盲人引路
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.
新經理根本不知道自己在做什麼,這真是盲人摸象。
•
Trying to learn from someone who knows as little as you do is like the blind leading the blind.
試圖向一個和你一樣一無所知的人學習,就像盲人摸象。