How does the subconscious come up with future spaces?

Variant A (Apartment A)

Variant B (workplace)

Variant C (Apartment B)

Example scenario:

• Person XY lives in variant A from 1981 to 1986
• 1986 – 1992 Person XY lives in a completely different apartment
• 1992 – 2015 Person XY also lives in a completely different apartment
• From 2010, person XY starts working at a company and works there in variant B.
• 2015 – 2022 Person XY lives in variant C

Between 1981 and 1986, a series of dreams appears in which person XY is in variant B (future apartment) and variant C (future workplace); deja vu may occur in the respective future periods.

Between 2015 – 2022, a series of dreams appears where person XY is in variant A (previous apartment) and variant C (current workplace).

In the example from 1981 to 1986, how do you arrive at rooms that you don't yet know, but that you will actually be there at some point?

For the period 2015 – 2020 it is clear that you already know the premises because you have been there before or are currently there.

Is it possible that variant A is simply converted into variant B or C or any other variant in the dream?

How does the subconscious know how it will be set up?

When we sleep and in our dreams, for example, variant A is rebuilt, aren't there actually countless variants and possibilities and variant B and variant C would therefore be unlikely?

What do you think and what are your experiences?