1. CS 3043 Social Implications Of Computing 11/24/2015© 2004 Keith A. Pray 1 Class 12 Risks Keith A. Pray Instructor socialimps.keithpray.net

2. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 2 11/24/2015 Overview 1. Risks 2. Assignment 3. Evaluation Forms (to start 10 minutes before class ends)

3. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 3 11/24/2015 Risk What is it? Chance of it happening?  Random, Historical statistics, Analysis Give examples of risks with computer systems

4. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 4 11/24/2015 Predicting Risk What are the factors? Enough data to be statistically significant? Can you reduce or increase your own risk?  Chance  Severity

5. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 5 11/24/2015 Reliability Of Statistics Are other factors controlled? Is enough time covered? Is all data reported?

6. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 6 11/24/2015 Cost-Benefit Analysis How much does it cost? What do I get for this cost?

7. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 7 11/24/2015 Risk-Benefit Analysis What could go wrong? How likely is it? How costly are the consequences?

8. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 8 11/24/2015 Limitations to Risk-Benefit Analysis Hard to quantify probabilities Hard to quantify costs Who bears the costs? Are the potential benefits worth it?

9. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 9 11/24/2015 Some Measures Mean Time To Failure (MTTF) Mean Time Between Failures (MTBF) Mean Time To Repair (MTTR)

10. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 10 11/24/2015 Relying Too Much Limits of modeling reality Limits of precision Limits of algorithms Limits of interpretation

11. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 11 11/24/2015 Value of Intuition Are results reasonable?

12. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 12 11/24/2015 Producing Good Software Good specifications Good usability Good design Robustness Good implementation Testing

13. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 13 11/24/2015 Plan For The Long Term Version control Future development New platforms Patches Security Training Customer support

14. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 14 11/24/2015 Overview 1. Risks 2. Assignment 3. Evaluation Forms (to start 10 minutes before class ends)

15. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 15 11/24/2015 Assignment Implications  Read Chapter 9. Short paper: none Answer short individual questions assigned during class.

16. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 16 11/24/2015 Assignment Group Project Due Thursday  Cite scenes and section in your text which are related to the new material covered.  Prepare a 10 minute presentation using the material you’ve produce for the Group Project. You will be graded on: Clear speaking Clear presentation Slides and any other presentation aids Organization Quality of topics (points you wish to make) and explanations Summary of the film as it relates to this course

17. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 17 11/24/2015 Overview 1. Risks 2. Assignment 3. Evaluation Forms (to start 10 minutes before class ends)

18. CS 3043 Social Implications Of Computing 11/24/2015© 2004 Keith A. Pray 18 Class 12 The End Keith A. Pray Instructor socialimps.keithpray.net

19. CS 3043 Social Implications Of Computing © 2007 Keith A. Pray 19 11/24/2015 Exercise Divide into groups. Each group gets a category.  Natural disaster.  Equipment failure.  Accident (large- and small-scale).  Deliberate act. Identify as many risks as you can in that category. We will discuss this categorization.