Terence McKenna's 1999 Palenque talk on psychedelics as philosophical tools, the cosmological constant, and the partnership between biology and machines. Recorded poolside at the Chan-Kah Hotel near the Mayan ruins, presented by Lorenzo Hagerty as Episode 002 of the Psychedelic Salon.

At the 'Shamanic Plant Conference' (January 26th 1999 in Palenque, Mexico) the writer, philosopher and shamanism expert Terence McKenna held two lectures entiteled "Linear Societies and Non-linear Drugs"