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OCR: INFORMATION SYSTEMS ANALYSIS AND DESIGN 591 Human errors are mistakes made by computer operators. Common FIGURE 10-44 errors within an information system include entering inaccurate data and Human error was blamed for failing to follow required procedures. Poorly trained computer operators blackout that cascaded from were blamed for the biggest North American blackout in history, which left the Midwestern United States, more than 50 million people without power in the summer of 2003 (Figure across the Northeast and into 10-44) Canada Software failures can be caused by bugs or flawed software design. tiny memory leak might be undetectable in small computing system but i can be disastrous on a system consisting of hundreds or thousands of com- puters. Other bugs may cause security leaks. Hac ...