Germans think systematically. They strive to understand the decision in its broad and interconnected context.
Americans break down complexity into its component parts, in order to focus on the essential: who or what is served by a good decision.
Germans see Americans as moving through the decision-making process impatiently, without having thought through the complexity of the issue.
From the American viewpoint, Germans consider too many factors to be non-determinant in the decision-making process. Time is wasted. Momentum is endangered.
Advice to Germans
Remain systematic in your approach to a decision. At the same time be more pragmatic. Narrow the overall scope of your understanding of the problem.
Focus on the truly relevant factors. Keep the other factors within your peripheral vision, but do not allow them to distract you from the heart of the matter.
Advice to Americans
Engage with your German colleagues in their seemingly philosophical discussion about the nature of the decision to be made. You will gain insight into their thinking. You may find a broader perspective to be of value.
Once you are a full participant in the discussion, you can influence the course of the decision from the beginning. If you feel that your German colleagues are getting a bit too systematic, considering too many factors, this is your opportunity to reign them in.