I think we have a different definition of "unpredictable". I don't mind (within reason) when an option has unadvertised consequences, such as in the Rdio examp

I think we have a different definition of "unpredictable". I don't mind (within reason) when an option has unadvertised consequences, such as in the Rdio example. That doesn't strike me as "unpredictable" as much as it's "complex". The "unpredictability" that I dislike is when I take an action and cannot predict what happens. Sometimes X happens and sometimes Y happens. When I go to a page, I want to see this thing. When I sync my iPhone, I know I want that thing to occur. Different takes, both valid.