That is the question!, how my mind picks the missing information. If the camera would be able to pick the same information I would not need to tell it.

I had an experience even in a different area many years ago.
I was trying to synthetize a piano sound, a lot of theories, harmonic analyzes of a piano sound, temptatives and whatever I tried it didn't sounded as a piano, so I desisted.
Many years later I was working in making sounds for a pinball machine, this time it was not music, it was noise. I used a Z80 microprocessor and experimented many ideas and digital algorithms for generating noises and FX.
The machine needed 10 to 20 sounds, so I invented, experimented and what was useful I added to the machine.
In one of my experiments with white noise and shift registers I found something that had the sound of a piano, but it was not music, it was noise!!!
The sound was of a bad piano, an untuned piano, but everyone was able to recognise the sound of a piano.
In resume I found something that defined for human ears the sound of a piano even lacked of any melodical content.
In resume, there exist some parameters that makes the difference between what is artificial and what is real. If you find the right parameters the result can be bad, of poor quality but it looks real.

In Poser I don't use painted textures, for much better, bigger size and quality have painted textures any texture taken from a photograph produce much better result.
And some photographic textures that I have are small and of bad quality if you look at it, but once applied to a model and rendered the result is excellent. (It doesn't mean that the textures must have bad quality, only that I was not able to find the same with better quality).
There is something in photographic textures that nobody is able to paint or generate.
Also there is a technical clue that I was not able to decode yet, they compress much better!

Stupidity also evolves!