The discussion centers on locating the very first thread posted on Physics Forums (PF) and whether its author is still active. A link to the Internet Archive is provided, but it is noted that the archive primarily stores main pages rather than individual threads. The oldest surviving thread identified is from March 7, 2003, titled "The Source of All the Mind," started by user #2. It is mentioned that the original threads from the first year of PF were deleted to save space, but the founder, Greg, had saved them on a disk that could be purchased for $20. The Wayback Machine does not have records from 2003, limiting access to early content. Additional links to early discussions and member profiles from 2001 and 2000 are shared, highlighting the forum's growth and evolution over time.