Earlier quoted context omitted.
How good can you recreate an image that is described by words? Obviously not bit by bit and pixel by pixel. You get something that resembles the original but not an exact copy.
you can create original exactly with right prompt
no, the simplest example that it is not possible in practice is in heraldry, where blazon - that is description, yield different emblazon - that is depiction, depending on who and where creates crest
crest always stays true to descriptions but details are always different
now when I think about it, heraldry is practical way to describe how generative algorithms work