But what you can find out is that the candidate is honest and will tell you he/she does not know the answer. In the end you want to work together on things and

But what you can find out is that the candidate is honest and will tell you he/she does not know the answer. In the end you want to work together on things and you want to know how the person ticks. So a self reflected, honest candidate is good and at least I have the impression you can assess where you would need to provide support /trainings for the candidate, or how self learning would work