I am aware of the general usage of "being", which suggests a temporary state, such as "He is being angry".
However, I am a little bit confused in the following specific context.
An English teacher uses "being" in her classroom in this way.
"simple past" is to mention a past event when we are being specific about when it happened
"present perfect" is to mention a past event while we are being unspecific about the moment it happened.
Why did she use "being" in that specific context? Is it because she was teaching grammar?
Could someone please give a hint? Thanks in advance.