“Group dreaming was at one time taken for granted as a natural human characteristic – in a tribe, for example, when new locations were being sought, perhaps in time of drought. The various tribal members would have dreams in which the problem was considered, each dreamer tackling whatever aspect of the problem that best suited his or her abilities and personal intents. The dreamers would travel out-of-body in various directions to see the extent of drought conditions, and to ascertain the best direction for the tribe to take in any needed migration.
“Their dreams would then be shared by the tribe in the morning, or at special meetings, when each dreamer would give a rendition of the dream or dreams that seemed to be involved. In the same way, other dreamers would simply check with the dreamers of other villages or tribes – perhaps a hundred or even more miles distant. Some such dreams were extremely direct, others were clothed in symbolism according to the style of the dreamer, but in any case the dream was understood to have a public significance as well as a private one.”
(Dreams, “Evolution” and Value Fulfillment Vol 2, Session 933)