Wednesday, September 30, 2009


Human is the ultimate go to excuse for slips and fumbles during our daily lives. It's not just an easy way out of situations though, it's how were are. Human's weren't built to have errors, but compared to computers who are either right or wrong, it's human nature to be perfect.

The most common of these errors are slips; one would expect a certain result, but accidentally get it mixed up with a similar activity. For example, Norman explained how he was counting pages and counted "1, 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, King, ace." He had been playing cards recently.

Norman also brings up the interest topic of error detection. While it's obvious for the most part if someone slips or not "detection can only take place if there is feed back." In some cases, it is easy to discover that something is wrong, but hard to discover exactly what. In cases like this, often anticipating the result can lead to solving the problem, but sometimes the errors are to far out to make any connection.

A seemingly common important error happens with human interaction with machine; computers primarily. A hundred times a day, a little window will pop up asking "Are you sure you want to delete this file?" or something along those lines. More often than not, you do actually want to delete the file, I have gotten so used to just hitting enter or clicking without reading, that I often deleted files I have not meant to. Although this might same kind of drastic, especially because computers work in 1's and 0's the result should be absolute, but computer were designed with error in hand and almost always you can get a file back. Whether it be in the computer's trash can, or saved on another hard drive.

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