 The precognition itself will be a narrative summary produced by the precognition officer, and will not be a verbatim account of the questions and answers, nor will it will be signed by the witness as an accurate account of their words.A summary precognition cannot be used to directly challenge the evidence given by a witness under oath.This is the kind of precognition that can be produced by a defence solicitor, but a witness is not required by law to give such a precognition (though it is Crown Office guidance that a witness should do so.)