Can anyone write some bullet points or a short summary about the article the big chill, explaining what is the main purpose for it. it will help a lot !

Lawrence Kasdan says the title, "The Big Chill is about a cooling process that takes place for every generation when they move from the outward-directed, more idealistic concerns of their youth to a kind of self-absorption, a self-interest which places their personal desires above those of the society or even an ideal"

What do you mean determine? answer in comment section.