The following questions are all weighted equally (2 points each). Be brief.

1. Describe reductionism, and say what is its relevance to HCI.
    
2. Who invented the mouse and where did he work at the time?
    
3. Say what is "tacit knowledge" and give an example.
    
4. Say what is "iterative design" and what is its relevance to HCI.
    
5. What is the first of Shneiderman's "Eight Golden Rules"? Also briefly describe one important way that it can be achieved in practice.