In the Peanut Butter – Jelly example why not let the bread apply the ingredient?
IndexThis question refers to the peanut butter and jelly sandwich object model on p.99 in chapter five. The questioner wants to know why couldn’t the bread slice think, “I am a bread slice. I apply an ingredient to myself in either a light or heavy amount.”, and why couldn’t the ingredient think, “I am an ingredient. I am applied to a bread slice in either a light or heavy amount.”? Thus the action of applying ingredient would be first-person for the bread slice and third-person for an ingredient, which is the opposite of the example in the book.Later in the book, (pg 169) we introduce the principle “The Most Specific Carries the Load.” When trying to decide which object to put the work in choose the one that is most specific. Most specific is easy between collaborators …role is more specific than actor, part is more specific than assembly etc, member is more specific than group. Here we have to distribute work among indirect collaborators the bread slice (place) and the ingredient (
