不可否认一个产品的最高设计原则对于统一设计师，产品经理已经开发人员都是至关重要的。所有的决策都应该基于这些原则。微软的Windows，Office以及Surface都有着怎样的最高设计原则呢？看看还是挺有意思的。

For the Windows 7 desktop design, Stephan Hoefnagel showed the following principles in action:

1. Reduce concepts to increase confidence
2. Small things matter, good and bad
3. Solve distractions, not discoverability
4. Time matters, build for people on the go
5. Value the full lifecycle of the experience
6. Be great at “look” and “do”

For the Microsoft Office 2007 redesign, Jensen Harris illustrated how these “design tenants” helped the team make effective decisions:

1. A person’s focus should be on their content, not on the UI. Help people work without interference.
2. Reduce the number of choices presented at any given time.
3. Increase efficiency.
4. Embrace consistency, but not homogeneity.
5. Give features a permanent home. Prefer consistent-location UI over “smart” UI.
6. Straightforward is better than clever.

For Microsoft Surface, Joseph Fletcher mentioned how a set of principles for Natural User Interfaces (NUIs) and “super principles” for Microsoft Surface helped the team design.

Natural User Interfaces should be:

• Evocative: Principle of Performance Aesthetics
• Unmediated: Principle of Direct Manipulation
• Fast Few: Principles of Scaffolding
• Contextual: Principle of Contextual Environments
• Intuition: Principle of Super Real

Microsoft Surface should be:

• Social: multiple simultaneous users
• Seamless: digital & physical combined
• Spatial: kinesiology

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