The transformation algorithms from real-world experience to dream experience are not yet fully understood but may be unique to each individual.

“I don't think we yet know what the algorithms of transformation of real world experience to dream experience are and once we do and I think somebody we will understand those through electrical recordings and MRI type um uh experiments and some of the experiments you talked about earlier point to this and so I think it's entirely reasonable to assume that we each have our own unique abstraction algorithms so that indeed we can have consistent representation of real world experiences in symbols but that it's not going to be the same for everybody correct”