In some senses we know agreat deal about dreaming. We believe we understand quite well the biology ofthe underlying state, which is the best substrate for dreaming. This isessential knowledge and it provides some basic facts about conditionsunderlying dreaming; but it does not tell us what dreaming is.
In some senses, we knowvery little about dreaming. We haven’t agreed on itsbasic nature but what we can agree on, is, that dreaming connects. We canexperience that dreames make connections between recent event material and oldmemories; it often puts together or combines two different people, twodifferent places or two different parts of our lives.
We make connections all thetime, but the difference is, that dreaming connects more broadly and more widelythan does waking; In waking there is a tendency for linear pictures orspecific imagery usually guided by specific goals, while in dreaming theprogression is less specific and less focused.
Dreaming thoughts tend towander and combine.