Forgive me for not being clearer. I intended the paragraph itself as a brief argument. If you'll give me a second reading, I'll try to explain it better terms.
My claim is that scientists will one day reach a point where they can no longer decompose objects into simpler parts or explain their behavior in terms of simpler forces. This is because scientists claim that we have the capacity to understand how the universe works, and consequently, the levels of composition of objects both on the largest and smallest scales are finite in number. If scientists reduce everything in terms of the simplest objects and forces, they still have not explained the power behind the being of those objects or forces. Therefore, they will have to resort to philosophy or theology to explain it. Science is concerned with the physical world, but the power behind the existence of a physical world is clearly not physical. Otherwise, scientists will have to do what they judge Christians for, and that is explaining things simply by saying it is just so. This is why I ask whether science can provide a satisfying explanation for the universe.
I hope that is clearer. Forgive me if it's not, and I understand if you're not willing to promote because I haven't yet contributed much to other discussions. I'll get to that soon enough.