ronburgundy
Contributor
Keith&Co and Connick. You got it.
In psychotherapy it is known that patients telling dreams are reconstructing, not reporting. Its value is not because they are recounting an actual dream, but that they're disclosing a good part of their subjectivity, expectations about therapist wishes, etc. I'd classify this in dream-telling category.
Not only dreams, but all memories are reconstructions. The details of past experiences are not stored together in a file somewhere in a specific brain location. A memory is largely a reactivation of a particular complex pattern of neural activation involving many brain areas. Somewhat like "you can never step in the same river twice" idea, you can never really have the same pattern of brain activation twice. Everything from the time of day, to what you ate, to what you've been thinking about recently, to the color of the walls right now impacts the exact pattern of activation in a manner that makes all memories inaccurate reconstructions of past experiences. They vary in how inaccurate, but include things that weren't there, exclude things that were, rearrange orders, combine entities, and also misrepresent how we felt or thought about the experience at the time. In fact, our memories for our own subjective past feelings and thoughts are some of the most inaccurate.
In addition, how emotionally intense or "real" the recalled experience is has no correspondence to the accuracy of the memory, and might even be negatively related to accuracy since emotion triggers thoughts that go with that emotion, even when the thoughts have no actual relations to the events in question.