No, I gave you an example of a situation where you have no knowledge of its designer. You'll then walk around in it and notice stuff. A bed would mean the person sleeps there, a couple of deer heads that they're a hunter, a few paintings that they're probably an art lover.
You did not come to the conclusion it was designed by knowing those things before hand. It's not a trap. We recognise designs as structures that nature can't make. Your questions are valid ones. Unfortunately it's going to take longer to find those answer because of enquiry stopping at evolutiondidit™.
One of the greatest challenges to the human intellect, over the centuries, has been to explain how the complex, improbable appearance of design in the universe arises.
The natural temptation is to attribute the appearance of design to actual design itself. In the case of a man-made artefact such as a watch, the designer really was an intelligent engineer. It is tempting to apply the same logic to an eye or a wing, a spider or a person.
The temptation is a false one, because the designer hypothesis immediately raises the larger problem of who designed the designer. The whole problem we started out with was the problem of explaining statistical improbability. It is obviously no solution to postulate something even more improbable. We need a "crane," not a "skyhook;" for only a crane can do the business of working up gradually and plausibly from simplicity to otherwise improbable complexity.
The most ingenious and powerful crane so far discovered is Darwinian evolution by natural selection. Darwin and his successors have shown how living creatures, with their spectacular statistical improbability and appearance of design, have evolved by slow, gradual degrees from simple beginnings. We can now safely say that the illusion of design in living creatures is just that – an illusion.
http://en.wikipedia.org/wiki/Ultimate_Boeing_747_gambit