experiments, and the ganzfeld experiments (a mild sensory deprivation procedure).

Second sight may have originally been so called because normal vision was regarded as coming first, while supernormal vision is a secondary thing, confined to certain individuals. An dà shealladh or "the two sights", meaning "the sight of the seer", is the way Gaels refer to "second sight", the involuntary ability of seeing the future or distant events. There are many Gaelic words