CLEAN : Alba: White truffle sold for 75,000 euros at Truffle Auction

The transcript covers various topics, starting with an introduction that conveys uncertainty. It then moves to a discussion about a firefighter and Retiro, followed by a segment on music and travel plans, including playing the piano and a trip to Italy. The final section discusses Doctor Signori and logic.

Discuss the implications of the statement 'But then we still don't know.'

What can be inferred about the character referred to as 'Doctor Signori'?