An identity would seem to be arrived at by the way in which the person faces and uses his experience.
I know people watch our movies and they'll see a lot of images - they call it gross-out - that they don't like, and I understand that. It's an important movie and one that's extremely well done, but the amount of violent imagery was not for me.
For as long as one has no further point of reference, apart from the position of the maximum, the wavelength thus remains uncertain by an integral factor.