1. Errors, Failures, & Risks
Chapter 8
Errors, Failures, & Risks

2. Real Headlines Navigation system directs car into river
Data entry typo mutes millions of U.S. pagers
Flaws found in software that tracks nuclear materials
IRS computer sends bill for $68 billion in penalties
Robot kills worker
California junks $100 million child support system
Man arrested 5 times due to faulty FBI computer data

3. Problems for Individuals
Billing errors
Page 407
Inaccurate or misinterpreted data in databases
Physical problems – Blackberry Thumb and RSI

4. System Failures Phone systems Travel systems – Amtrak, airlines
Test results in NY
Other systems

5. Computers in the Air “Fly-by-wire” airplanes
Other airline examples in book

6. Therac-25
SW controlled radiation therapy machine to treat people with cancer
, Therac-25 machines at 4 medical centers gave massive overdoses of radiation to 6 patients – 3 patients died