장님 코끼리 만지기.

In modern Korea, '시각장애인' is the respectful term. However, in this proverb, '장님' is a fixed historical term and is not considered offensive when used within the idiom.

Yes, but it's better to describe their *actions* or *thinking* as '장님 코끼리 만지기 식' rather than calling the person that directly.

'Frog in a well' means you have no experience of the outside world. 'Elephant' means you are looking at a complex thing but only understanding a small part of it.

Very often! It describes departments that don't communicate or managers who only look at one metric.

Since '만지기' is a noun, you just add '이다' (to be) or '같다' (to be like). Example: '만지기예요' or '만지기 같아요'.

Yes, the Hanja version '군맹무상' (Gun-maeng-mu-sang) is the 4-character equivalent.

Almost never. It is a critical phrase used to point out a mistake or a limitation.

Yes, almost every Korean knows the story from childhood books or school lessons.

It means 'style' or 'way.' So '장님 코끼리 만지기 식' means 'in the style of a blind man touching an elephant.'

You can say '장님이 코끼리를 만지는 것 같아요,' but the fixed proverb form is '만지기'.