Remembering the Future

Simplicity is NOT a Goal

• Things too simple are difficult
• Things too complex are difficult
• Human thoughts are not simple
• Programs are essentially complex
• Combination of simple concepts can be complex very easily

Principle of Least Surprise

• Principle of fulfilled expectation
• Principle of pleasant surprise
• Principle of Immersion

Principle of Succinctness
We're frustrated when we:

• wasting time
• can't focus on problem
• are interrupted

TIME is an important factor.

Languages can be viewed as interfaces

Guidelines for good interfaces.

• Consistency
• Flexibility
• Succinctness