Cognitive abilities often regarded as unique to humans include humor, morality, symbolism, creativity, and preoccupation with the minds of others. In these compelling talks, emphasis is placed on the functional uniqueness of these attributes, as opposed to the anatomical uniqueness, and whether these attributes are indeed quantitatively or qualitatively unique to humans. Merlin Donald (Queen's Univ) begins with Skilled Performance and Artistry, followed by Terry Deacon (UC Berkeley) on Symbolic Communication: Why Is Human Thought So Flexible?", and V.S. Ramachandran (UC San Diego) on Inter-Modular Interactions, Metaphor, and the "Great Leap." (#24975)