слепой ведёт слепого означает в английский

blind leading the blind▼(situation in which an unqualified person is attempting to guide, advise, or train others)
phrase
[UK: blaɪnd ˈliːd.ɪŋ ðə blaɪnd] [US: ˈblaɪnd ˈliːd.ɪŋ ðə ˈblaɪnd]