For the interested reader (if any):
PART I: Another obstacle is the macho culture of programming. "Real programmers don't need debugging tools". People are psychologically reluctant to admit the prevalence of bugs in their programs, making them unwilling to devote time and money to improving the process of dealing with them. John Guttag, a professor of software engineering at MIT, said, "Finding a bug in your program is like finding a cockroach in your kitchen; if you have one you probably have more and is not something one should be pleased about," ... taken from: Lieberman, H. and Fry, C. 2001. Will software ever work?. Commun. ACM 44, 3 (Mar. 2001), 122-124. DOI= http://doi.acm.org/10.1145/365181.365236.