a chicken and egg situation

US /ə ˈtʃɪkɪn ænd ɛɡ ˌsɪtʃuˈeɪʃən/
UK /ə ˈtʃɪkɪn ænd ɛɡ ˌsɪtʃuˈeɪʃən/
"a chicken and egg situation" picture
1.

鶏と卵の状況, どちらが先か分からない状況

a situation in which it is impossible to say which of two things caused the other

:
It's a real chicken and egg situation: do people get stressed because they're busy, or are they busy because they're stressed?
それはまさに鶏と卵の状況だ。人々は忙しいからストレスを感じるのか、それともストレスを感じているから忙しいのか?
The problem of poverty and lack of education is often described as a chicken and egg situation.
貧困と教育不足の問題は、しばしば鶏と卵の状況として説明される。