鼻先思案 (はなさきじあん) Japanese meaning | KotomoraMeanings
1
noun
superficial thinking; shortsighted idea
yojijukugo (four-character idiom)
Refers to a shallow, ill-considered plan or way of thinking that only looks at what is immediately in front of one's nose. Often used critically.
そんな鼻先思案では、大きな問題は解決できない。
With such superficial thinking, you can't solve big problems.