All Scrum Team Members, including the ScrumMaster and Product Owner, should understand the high-level technical aspects of the product that is being built.  As well, that understanding should be solid enough, that it can be communicated to other people.  This understanding helps the team members in many situations dealing with each other and with stakeholders.  Understanding the structure of the system is an aspect of Transparency.  This is essential for maintaining overall quality of the product. Development in one part of the product or system should never cause problems for any other part of the product or system.  If team members do not know their product in this way, it can cause significant problems in communication and in how Product Backlog Items are implemented.

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