Put a question in plain words. It searches all 309 transcripts, quotes the passages where the programme actually discusses it, and can write the answer out — with a link to that exact place in the text.
Ask about a theme, a person or a phrase — inversion, envy and power, the Keppe Motor, psychosomatic illness — and read what the programmes said. Follow up in the same window and it keeps the thread.
Answers are written from the transcripts and can still be wrong — the quoted passages are the authority. Nothing you type is stored.