Maybe the screenwriters thought the original stories were too hard to tell in movie form, but I suspect a clash between the Dickian worldview and the Holly-worldview is the real culprit. The Dickian worldview wouldn't work in a Hollywood movie (meaning less box office revenue). […] People don't like their belief in free will questioned.

We got into a silly quarrel about what food to order.

And while I am more concerned about the well-being of others than for myself, more hurt for them and for their losses than for my own, more worried for their futures than for the future of Martha Stewart the person, you are faced with a conundrum, a problem of monumental, to me, proportions.

Learning the distinction between well placed concern and unfounded crazymaking is a life long lesson in developing good instincts and creating solid emotional boundaries.