*5.3.3 Difficult to locate nested bugs, particularly "silent errors"*

The nested bugs were the hardest to locate by the participants as they were elusive. In the case of bug B3, three participants were able to find them as they were *clear cues* with error messages that were returned in the pipe output. To detect the silent errors, participants had to systematically analyze each module of the pipe program and check the debugging window. As a result, only one participant was able to locate the B6 bug. Hence, the IDEs should strengthen the cues by making prey/bugs more visible to the programmers through clear cues.
