What exactly does "reliability" mean in this case? Typically, "reliability" means something different from "correctness" (exact conformance to the specification); as long as things work "well enough" for an acceptable length of time, the software is "reliable".

What would Doug be willing to accept in his definition of "reliability"? Have students come up with questions for Dr. Newberry to ascertain what he means here. What would constitute "failure" for him? Dr. Newberry's notion of reliability may have nothing to do with correctness. LSGUI and LogicSim could work perfectly, and students could still have "problems with the tool". So how much of the past trouble was due to bugs (departures from the specification) and how much was due to usability problems?

Categorize the enhancements in the bulleted list in terms of "reliability" vs. "usability".