Issues with job zone and its subclasses

[gregfowlerphd]

There are a few issues with the job zone class and its subclasses. First, strictly speaking, the definition for "job zone" isn't Aristotelian, but this could easily be fixed by changing it to "A data item that defines: how much education...". Second, it's not clear that job zone 1 is genuinely a subclass of job zone. Instead, it might be an instance of job zone. If it is the former, what are its instances? (Note that if job zone 1 genuinely is a subclass rather than an instance, its definition isn't Aristotelian and could perhaps be changed to something like “A job zone that indicates that an occupation needs little or no preparation”. Note also that similar remarks apply to the other asserted subclasses of job zone.)