The author shares techniques used in a successful "Ethics and Professionalism" class at California State University, San Bernardino. Ethical issues played a part in designing the class. The author describes active learning and holistic grading. Ethics demanded a novel way to post grades on the web without exposing personal data. This was evaluated by students. The author points out some improvements he has made, or will make.

A recent paper on domain modeling had State Charts with semantic errors.

This paper looks at the assumptions driving mass marketed software.These assumptions explain why traditional software engineering methods and processes appear to have less economic value in a mass market.The assumptions lead to a model that predicts observed patterns such as (I) rapid development, (2)1ower quality, and (3) an initially dominant product that is eclipsed later Keywords Economic models, price, cost, market size, quality

The author indicates some things that need clarifying in the paper cited in the title. The paper does not make it clear that a class of objects is not equivalent to a set of tuples. In a set of tuples two different tuples cannot contain the same data. Two different objects in a given class can contain the same data. In most of the paper this does not matter. However, the simulation function between a subclass and a superclass must be injective, but the (overloaded) simulation function between the sets of tuples usually cannot be injective.