From "Know Thyself" to "Construct Thyself" Can't help my curiosity... Suppose one considers this. The appendix in the human body is more or less useless (correct me if i'm wrong). In fact it just become a nusicance in situations. So there are just obselete 'bits' hanging around that everybody has. Are there similar things in the brain? Also, taking an engineering standpoint, in terms of efficiency, i can imagine that there are probably lot of mechanisms in the human body that work the way they do because working that way was the most (quasi) efficient choice for nature. In the current world, such a mechanism is probably inefficient and there are ways that a scientist can identify probably that can do the same function better or perhaps even get rid of that altogether. Are there these kinds of inefficient mechanisms in the brain (eg: that operate during brain development?) has anyone identified any so far? ... obvisly i'm trying to get an idea of what avenues for engineering are possible.