The variables are very few. There are environments like DOS, windows, UNIX, OS 2 warp and the Mac Os which vary in there presentation to the user, but basic computing is the same. People are much more complex than computers. Society today would purport humans to be much more computer-like than reality indicates. People are not often as predictable as computers.
People have emotional and spiritual aspects of personality as well as the logical and carnal.
Therefore, we must recognize the bereaved as being multi-dimensional in there deficits at the point of crisis. We must attempt to design a funeral which will form for them, a holistic foundation on which they can build their lives, from the point of crisis to a healthy, natural lifestyle. The spiritual aspect of some people can be helped by a religious service, encouraging them to remember their faith. The emotional needs of a person can be supported by the free acceptance of emotional release, perhaps in the form of tears, or in the form of laughter. The logical, carnal side can be supported by assistance in making common sense decisions regarding funeral expenses, the choice of a monument or perhaps whether or not to sell the family home.