3.2.5 Comments

I have criticisms of all these definitions.

The first diagram is in most modelling books but
i it doesn't explain HOW to do it
ii it seems as though there are only four steps to the process

The second diagram is better in so far as there is more iteration
revealed but still not much explanation.

The third diagram begins to explain some of the stages. My criticism
is that we have gone from a four box problem to a seven box one.

The fourth one is the best yet. It has explanation and some iteration

. But all are not sufficient thus we must invent our own

. The next definition is my personal one. It is open to criticism
. I hope you do criticise. But we must start somewhere and so
We will use this as a starting point for the rest of the course.

I hope that you will form your own methodology.