No, I don't mean object as opposed to subject. I mean physical objects (a ball, New York City, a planet...) as well as non-physical objects (or abstract objects) like God, spirit, numbers etc.
What I mean by 'directs attention' is that Ne focuses on one specific potential object (the most relevant one) out of many potential objects.Clearly Ne directs one's attention to potential situations / realities.
I don't mean that a car is Si and a wheel is Se. Instead, Si identifies the object and Se focuses on a specific area of the object without knowing what exactly it is.But I have no idea why you think Si = whole and Se = part, it's a non sequitur.