Providing proof of one's past statements is a guarantee of being believed in the present. Doing DD is easier when one has facts to start with rather than non-facts. So Many non-facts are presented as meaningful here at SKTO.
Mr Daye told Mr Knight there's 100,000 lamas in Tibet. Knight said - No Way!
Daye inserted an article in the paper saying there's 100,000 lamas in Tibet. Next meeting Knight says, Hey you're right, there's 100,000 lamas in Tibet I read it in the paper.