The discussion centers on the presence of famous scientists in an online forum, with participants noting that while some well-known physicists like Brian Cox and Lev Okun have engaged briefly, their fame does not always translate to recognition within the forum community. The conversation highlights the distinction between being a renowned scientist and an internet celebrity, suggesting that many scientists are not widely recognized outside their specific fields. Participants express skepticism about the demand for famous scientists to join the forum, questioning the value of such participation given their existing commitments. The dialogue also touches on the varying degrees of fame and recognition among scientists, with some being well-known to peers but not to the general public. Ultimately, the thread reflects on the complexities of fame in the scientific community and the differing perceptions of what constitutes a "famous" scientist.