I call it The Holy Trio because there are three. They're related and they work together.
The Holy Trio is a series of similar questions that coax our interviewee to dig deeper.
You’ll get more information, more detail and bypass any rehearsed responses.
Just ask three forms of the same question.
‘What can you tell me about…?’
then, ‘What else can you tell me about…?’
and What more can you tell me about…?'