A self-organized team is a team that is able to self-manage and decide how best to accomplish their work.

When working on complex problems in complex environments, it cannot be guaranteed that applying a specific process or tool will fix the problem. Although, process and tools are important it's more important that people collaborate and try to find different solutions together and not rely solely on a tool to fix the problem.

Explanation/Reference:
Explanation:
The Development Team owns the Definition of "Done" and is accountable for the quality of the Product Backlog items.

When a Product Backlog item or an Increment is described as 'Done', everyone must understand what 'Done' means. Although this may vary significantly per Scrum Team, members must have a shared understanding of what it means for work to be complete, to ensure transparency. This is the Definition of Done for the Scrum Team and is used to assess when work is complete on the product Increment. The purpose of each Sprint is to deliver Increments of potentially releasable functionality that adhere to the Scrum Team's current Definition of Done.