If we have a "back" and a "front" view of a simple knot ( and all the practical knots
are simple, by definition ), we can follow the paths of the segments of the rope inside the knot s nub quite easily. Also, the tightened knot is a more accurate representation of the real thing : it reveals rather than hides many important things about the structure of the knot and the distribution of tensile forces inside it, that are concealed in the image of a loose knot !
In most pictures of the "new" knots I had presented in this Forum I have used two different ropes, of about the same diameter and stiffness, but of different colour. I have also shown more than two views, B&W or pencil-sketch pictures, inverted colour pictures, exploded knots, tying diagrams, and even KnotMaker diagrams, but I have not noticed any difference in the interest of people - which is almost null...
This lack of interest should be due to the low quality of the pictures, or the low quality of the knots shown in the pictures. I do not believe that the pictures are of such a low quality, therefore I have to conclude that....
Anyway, I think that an interested knot tyer would enjoy the game of "deciphering" a picture of a knot - and even if he would tie it wrongly, there is always the possibility he will discover a new knot, better than the one he missed !