There was a revealing demonstration by Edward Debono that throws some light to this issue. In this demonstration he shows that only in hindsight is vision 20/20. The way he demonstrated it was by cutting up a square into 4 parts. Then he gave the audience 2 or 3 parts and asked them to guess the structure. Only when all 4 parts are given can the structure be seen.
Now when we do technical evaluation we are also doing the same. We are demonstrating the solution after all the visible evidence is known. Now stop here. There is something wrong with the picture. How is the game of chess played?