SOC 201 Chapter 6: Chapter 6.16
Document Summary
The first time the o-rings were damaged the engineers found a solution and decided the space transportation system to be flying with acceptable risk. The second time damage occurred, they thought the trouble came from something else. Because in their mind they believed they fixed the newest trouble, they again defined it as an acceptable risk and just kept monitoring the problem. And as they recurrently observed the problem with no consequence they got to the point that flying with the flaw was normal and acceptable. Of course, after the accident, they were shocked and horrified as they saw what they had done. After you have selected your method (or, whenever possible, your methods), you have some decisions to make about whom you will interview, observe, or experiment on. In other words, you have to make some decisions about your sample.
