“J.W. Dunne was a distinguished man of science and professor of mathematics. [...] He embarked upon a lifetime study of precognition. In 1927 he published his basic conclusions in his bestselling book An Experiment with Time. [...]

He argued that if time was a fourth dimension then the passage of time must itself take time. If therefore time takes time there must be a time outside of time. He called this "time 2". [...]

Most of our life we live in "time 1", which is synonymous with the passing ordinary moments of everyday life. But during sleep a part of our personality (observer 2) can slip into this other dimension of time and experience events in the future which are communicated to our ordinary self (observer 1).

Investigations led Dunne to conclude that under certain circumstances past, present and future events were accessible to consciousness and that during dreams we can enter this fourth dimension of space-time.”