Well the meaning certainly depends on who you are. What struck me first was the secondary reality more real than the first one - i mean, it’s already in the title - it’s fiction (or rather the obsession with fiction, art, everything imagined, invented, created etc. before - that is why it is a “secondary” reality as a reflection of the “real” one), but this fiction is so more-than-life, it actually determines the way you see life, the "real (first) reality, and go on creating (re-shaping) things. So it’s mirror in the mirror - and this thing, this obsession with art (or pulp) is shining through all the “entertainment”. So it depends on whether you see the movie as such (story, entertainment, etc.) or the movie from inside - from the point of view of QT, the Creator, obsessed with great art, pulp, whatever, and setting up a new mosaic of all these elements.
