So Just How is ID's Supernatural-based Science Supposed to Work? (SUM. MESSAGES ONLY)

I think this an excellent point. One of the critiques used by YEC's regarding the various theistic evolution beliefs (and OEC to a point as well as day-age and gap theory) is that the loving and merciful god of the Bible would not use competition, death, and/or extinction because those are anti-life. (I just re-read Morris' 1974 Scientific Creationism and he has a section about this).So in the same vein as your question. Since over 90% of everything that has ever been alive is extinct, and nearly all of those are only found in 'Flood deposits' this means that a creator that wouldn't use evolution to produce modern diversity (because it is cruel) would use drowning and burial to destroy 9 out of 10 parts of that creation!

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"I have seen so far because I have stood on the bloated corpses of my competitors" - Dr Burgess Bowder