I've found that if I give it a pair of questions ("Why does X breed faster than Y", "Why does Y breed faster than X") it'll give me two neat little responses that explain why both these statements are true.

That doesn't sound useful on the surface of things, but the additional information in the responses allowed me to craft more traditional search queries I wouldn't have thought of (in my example I learned that species X is hermaphroditic, and that water temperature may be having an impact).

So replace? No. Enhance, if used carefully? Maybe, for now.