Dreaming is a kind of mental state or altered state of consciousness which occurs during sleep. Often, they involve fictitious events that are organized into a loose story. They show that our brains are capable of generating entire worlds that are disconnected, but often draw inspiration from our waking environment. They have fascinated mankind since time immemorial and much has been speculated about their origins and purpose. Early accounts account of dreams from as far as 5000 years in Mesopotamia, set in clay tablets. Like many other things, they also have been subject to the fundamental human need to find a meaning in things that they don’t understand by inventing one. As such many ancient civilisations treated them as a means by which the future and prophesies can be communicated.