variation

Glenn Gould's 1955 recording of Bach's Goldberg Variations, uploaded as a continuous performance of about 39 minutes.

Daniel Barenboim conducts the Chicago Symphony Orchestra in Elgar's Nimrod from the Enigma Variations, opening the 1997 season at Carnegie Hall in tribute to Sir Georg Solti.

Excerpts from W. Edwards Deming's Red Bead Experiment, where workers draw beads from a bowl and are judged on red ones that are largely down to chance. It shows how system variation, not individual effort, drives results.

Rhonda Patrick gives an IHMC talk on how genetic variation affects micronutrient absorption and metabolism, and how diet changes gene expression. It also covers epigenetics, including heritable changes, and stress tolerance.