Cs 575 Week 6Spring 2008Bapa Rao

Outline

• Organizational

• Review of previous meeting

• Student presentations

• Discussions

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

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

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

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

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

Man-computer symbiosis

• What is symbiosis?– Tight coupling– Mechanically extended man– Humanly extended machines– Chemical / electronic binding

HLAM/T

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, …

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

Licklider Contd--Economics

• Models are complex

• Simplification is risky and dangerous– Oversimplification– Premature simplification

• Communicating models is expensive– Cost of not doing it?

Licklider Contd

• Computer as switch vs. interactor

• Distributed intellectual resources– ‘critical creative mass’

• Vision of internet– Store-and-forward technology

• Economics: billing models

Vision of internet

• Node

• Mediator for online life: OLIVER

• Social groups

• Better for individual

• Better for society