Parapsychology Stigma: As a parapsychology experiment, the GCP is often dismissed as pseudoscience. A 2008–2009 Wikipedia edit war highlighted skeptical bias, with editors downplaying the project’s claims.
Inconsistent Results: Not all events show significant deviations, and the signal-to-noise ratio is low, making individual event analyses unreliable. Roger Nelson himself conceded in 2007 that the data were not yet solid enough to definitively prove global consciousness.