Matthew 13:13-15, Luke 8:10, Isaiah 6:9-10, John 9:39, 1 Corinthians 2:14, 2 Corinthians 4:4, Ephesians 1:18
Christopher Chabris and Daniel Simons conducted an experiment at Harvard University more than a decade ago that became infamous in psychology circles. Their book The Invisible Gorilla popularized it...