So which comes first? As young kids, we use Lego bricks to build structures and ideas- some designs of sorts. This is synthesis. Once you have the first completed structure, you can do some analysis, then decide to reiterate on the design to improve it. Synthesis takes place again – as new ideas are synthesized / compounded. Your first Lego car design had no wheels, the 2nd one did as you discovered the first car didn’t roll. Synthesis first. Engineering is all about this continuous process of synthesis-analysis-synthesis. God does not need to do any of this, he creates things perfect, at first go – no iterative synthesis. We, on the other hand, err every step of the way. So synthesis is our way of saying we cannot see the optimal design right away, we have to work hard to understand things. All those corporate departments of research and development, analysis groups, etc are an acknowlegment of how little we know a priori.