Errors, Failures, & Risks

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Presentation transcript:

Errors, Failures, & Risks Chapter 8 Errors, Failures, & Risks

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

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

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

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

Therac-25 SW controlled radiation therapy machine to treat people with cancer 1985-1987, Therac-25 machines at 4 medical centers gave massive overdoses of radiation to 6 patients – 3 patients died

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