The discussion revolves around the relevance of IQ in engineering careers and the validity of online IQ tests. Participants express skepticism about the significance of IQ scores, arguing that they do not accurately predict success in engineering or correlate with creativity and imagination. Many emphasize that online tests are not legitimate measures of IQ, often being mere games rather than scientifically validated assessments. The conversation touches on the variability of engineering fields and the flawed nature of comparing IQ across professions, noting that professional organizations rarely collect IQ data. Overall, the consensus is that while IQ may be interesting, it holds little practical value in determining one's capabilities or potential for success in engineering.