1. Cs 575 Week 6 Spring 2008 Bapa Rao

2. Outline Organizational Review of previous meeting Student presentations Discussions

3. Organizational Good news: forums not entirely dead –Not exactly buzzing either –Reminder: Please use a recognizable handle or sign your posts so we know who you are Peer Evaluation –Template is now online Assignment for next meeting –Review presentations and reading materials so far –Discuss concepts and issues that we have identified

4. Review of previous meeting Licklider’s Human-computer symbiosis paper Student presentations –Gender HCI –Everyday Activity-based web design –Cyborg –E-spionage Discussion –Broadly, user-aware design –What about differences in designer E.g., gender differences –Symbiosis or tight coupling –Value-based user requirements Legitimate vs illegitimate

5. Today’s Student presentations Safety-critical applications by Ziba Rostamian Web Usability by Raghavender Budamala Nanotechnology by Aditya Jamwal CAPTCHA & The ESP Game by Jayesh Shah

6. Discussion Licklider’s vision –Man-computer symbiosis Formulating vs. solving Speed of interaction (real-time) –Computer as communication device Communication: a comparison of models –Models  ontologies, web 3.0, … Licklider’s context: technical project meeting –Engelbart’s demo –Today’s contexts? Creative informational activity vs. informational housekeeing Affordability, accessibility, usability Distributed intellectual resources –Critical mass in intellectual endeavors –On-line interactive communities Issues considered by Licklider –Computer and humans have different skills –Prerequisites Speed mismatch, memory / hardware, memory organization, language, I/O –High-level design of the DARPA internet as a communication medium Other authors –Bush, Kay, Berners-Lee, Engelbart, … Current technologies and directions

7. Man-computer symbiosis Review Formulative thinking: –Humans: do the activity –Computers: facilitate Real-time, high-speed –Neo-whorfian 85% thinking time is housekeeping Flexible handling of complex situations –Humans and Computers –Computers: routinizable work

8. Man-computer symbiosis What is symbiosis? –Tight coupling –Mechanically extended man –Humanly extended machines –Chemical / electronic binding

9. HLAM/T

10. Human-computer symbiosis Issues –Speed mismatch –System requirements (hardware, memory, …) –Organizational mismatch: Memory organization (Information structuring and retrieval) –Language mismatch What versus how –I/O mismatch Voice, mobile, touch, …

11. Computer as communication device “In a few years, men will be able to communicate more effectively through a machine than face to face” What is communication? –Two tape recorders exchanging data –Two humans having a meeting –Collaborative Modeling

16. Licklider Contd--Economics Models are complex Simplification is risky and dangerous –Oversimplification –Premature simplification Communicating models is expensive –Cost of not doing it?

17. Licklider Contd Computer as switch vs. interactor Distributed intellectual resources –‘critical creative mass’ Vision of internet –Store-and-forward technology Economics: billing models

18. Vision of internet Node Mediator for online life: OLIVER Social groups Better for individual Better for society