superficial thinking; shortsighted idea
Refers to a way of thinking that only considers what is immediately in front of one's nose, lacking depth or foresight. Often used critically of hasty or ill-advised judgments. The synonymous form 鼻先思案 is also used.
See also: 鼻先思案
With such shortsighted thinking, it will become a big problem in the future.
His proposal is nothing more than a half-baked idea.
Synonymous variant; 鼻先分別 uses 分別 (discernment) while 鼻先思案 uses 思案 (thought/consideration), but both convey the same idea of shallow, shortsighted thinking.
Compound of 鼻先 (tip of the nose) and 分別 (discernment, judgment). The image is of thinking that only reaches as far as the tip of one's nose, i.e., lacking foresight.