A couple of things.
First off, this seem to be where the main argument is:
Can the existence of God be proved through scientific inquiry? Can playing the board game Monopoly prove whether Charles Darrow or Lizzie Magie invented the game? Can assembling a puzzle of the Mona Lisa prove the existence of Leonardo da Vinci? Can following a map of the Guggenheim museum prove that Frank Lloyd Wright was the architect? No. The inventor of Monopoly, the painter of the Mona Lisa, and the architect of the Guggenheim museum are outside the scope of proof of the respective game, puzzle, and map. In like manner God is outside the scope of proof, or disproof, of scientific inquiry.
Notice the style of argument: 1) Ask hard question. 2) provide an illustration. 3) Conclude on the illustration. 4) pretend the question is now answered.
This is clearly a person who is more used to talking who is writing the article, and i can just observe that i have seen that type of argument used over and over again in the WTS.
LETS just try to take the author on his word, and lets assume that it is really true that "..God is outside ... scientific inquiry".
This would mean two things: That God has no explanatory power, and that God has no utillity in terms of forming testable predictions.
In other words, we suddenly have a God who have never created life by a miracle, who did not cause the flood of noah, who did not make any significant prophecies and who will never interveen with the world in any clear way.
Im not sure that is what the author want to say, but that is the logical conclusion, since if God really did any of the preceeding things, he WOULD suddenly become INSIDE the scope of scientific inquiry. The author, in effect, turn God into another flying spaghetti monster, a magic sandwhich or a pink unicorn.
That the author talk about faith does not really change this. The faith, however it interact with the world, must allways look indestinguishable from a purely natural process, and must never leave the person who experience it with anything that cannot be explained just as easily from science, otherwise it would suddenly make God subject to scientific inquiry.
The author is either turning God into essentially nothing, or he does not really know what science is all about. Personally I think its the later, since i cannot see why any believer would want to go down the first route. Later in the article he does also seem to argue that some properties of God can be revealed by looking at nature - if this does not involve science, one does wonder what the author really mean.
Finally, the old "proof/disproof" in the context of science is ofcourse a strawman (is the author even aware of this?). Here is a simple way to answer the question:
- If God exist, he CAN cause himself to be known by everyone all over the world tomorrow in a testable way, for example by turning the moon into cheese, or causing a second flood (say its not so).
- If God does not exist, we can say with absolute certainty he will NOT cause himself to be known tomorrow.
Now there is a testable prediction, and it does indeed give EVIDENCE against God.