Virtual vs Real

I have often encountered this peculiar situation when the final design looks very different from what was imagined. Most of the design process is imagining a concept. Ideas in mind are sketched, drawn, detailed,prototyped, colored etc and later produced. When the concept is produced you see the real. For me at-least, the real needs a lot of work quite different from how you had imagined about the concept. Designers often live in the world of conceptions and forget to see the real, physical form. I have heard graphic designers failing badly while creating symbols, symbols start looking like something else and dangerously change meaning. Architect often dream about great spaces and end up creating clumsy corridors. One of my famous teacher architect once contemplated that the space he created was like the outer 'Prakara' of the chidambaram temple but for me it looked grossly like a simple huge space with no feeling of any sort of wall what so ever. I have seen Product Designers smiling at their own designs when the first piece arrives from the mold. Its simply looks new to him very far from the conceived, but somewhat looks similar to the conceived. Most of the designers stumble when the real is created! I have seen animators struggling to communicate a point after creation while everything looks okay on the script and storyboard.
Many a times, designers do secretly stick some kind of a personal process of controlling an aesthetics. Like in case of architects love to compose horizontals and verticals, some to making a structure, car guys love the sleek lines of renderings, graphic designers to usually what a graphic software can create! (sorry!)....some sort of styles. They pick up some style and try to create an aesthetic. Even the computer created models cannot give an accurate feeling of the physical.
If I look at the process of a sculptor, he is working directly on the final material. Little of conception and a lot of creation. A painters authority of color is more accurate than a designers sceptic judgments (thats why he proposes more than one designs to satisfy his client!). The involvement with the aesthetics is direct and live with artists. They are not outsiders. A musician works directly on the musical notes, does not spend time on conceptions. A dancer is working directly on the gestures and things which make the dance. Form is directly worked on.
Thats why, expressions and material beauty gets a lot more precisely expressed and beauty hidden in material results in interesting form. Comparatively, the aesthetics are more precise in an artistic process of creation of a physical. This is the reason why craft products look intricate. They are directly worked on.
Many-times, even in design schools, I have seen design teachers yelling on the top of their voices, to become sculptors at the final stages of design after all the conception. Why? Simply because the conceptions look ugly! Expressive qualities cannot be conceived with the designerly processes. It has to be an artistic process.
Conceiving and creating are two different things.