When communicating in Korean, one might want to emphasize that a particular observation contrasts with what one might expect. The structure A + 지는 않다, and its often-used shortened form 진, serves precisely this purpose.
Grammar Rule: By adding 는 to the negating structure A + 지 않다, you can stress that the observation goes against expectations. In informal speech, 지는 is often shortened to 진.
Understanding the nuances of '지는 않다' and its shortened form '진' can add depth to your Korean conversations. It allows you to convey contrary expectations, adding a layer of subtlety and emphasis to your statements.