Evolution is a meta-theory in the sense that it cannot be tested. If you cannot empirically test or experiment in order to probe the validity of the theory, it cannot be proven or disproven. Scientists rely all-too-heavily on questionable data that either supports the theory or doesn't fit neatly into it. In other words, everything that is evolutionary in nature is explained by evolution, which is practically a tautology.

Second, and more importantly, it is entirely possible to discuss intelligent design without EVER mentioning God. Let me write that a second time so that it sinks in: intelligent design (ID) theory, unlike creationism, uses science and mathematics and does NOT require the use of the word "God."