It's a great question you raise, I honestly am extremely curious to learn that myself. I don't know. There are just a few aspects about it that don't fully com

It's a great question you raise, I honestly am extremely curious to learn that myself. I don't know. There are just a few aspects about it that don't fully compute in my mind. Take this for example, and bear with me for a moment: The earth is 4.5b yrs old. Say 4b yrs ago life began. Just in the past 500m yrs, there were 5 major extinction events, with perhaps 80-90% of species going extinct each time on avg. Homo erectus are said to emerge something shy of 2 mio yrs ago. Denisovans are much younger. Us and Denisovans are genetically one species (we could produce viable offspring). The same holds with denisovans and homo erectus This means we could probably viably procreate with homo erecti from ~2 mio yrs ago. So across 2 mio yrs, pretty much no speciation occurred with us (if at all ever, remember that is still conjecture if we're being strict). Now remember the last major extinction was just ~65 mio yrs ago. Yet there are what, 1-2 billion different species alive today? I know there is parallelization involved as the model goes, but to me it seems there was still very little time for all that to happen given that a single speciation event takes millions of years. I'm not saying evolution by speciation is false. I'm just saying perhaps it's insufficient. --- All of that said, speciation - or even evolution and science in general (!) - is not at odds with my religious beliefs anyway, as long as we are being true to what's certain and what's conjecture.