Everything we make or apply technology to can be seen in light of the 10 guiding principles below:
Structure - How are the parts organized?
Material - What is it made of?
Fabrication - How is it made; by what process?
Mechanism - What are the parts that function together to make it work?
Power and Energy - What drives it? What provides it's source of energy?
Controls - How is it regulated or controlled?
Systems - What combination of inter-related parts is required for it to work?
Function - What is it's purpose? How does it work? What does it do?
Aesthetics - How does it look and feel?
Ergonomics - Can people use it effectively and repetitively without getting hurt?