Slow scientific growth?

 I have mentioned it in my book Human Element of the Human.  Scientific thinking became hugely popular thanks to the 'omnipotent' god dethroning almost all 'known' proponents of whatever peculiarity, abnormality, or all other notable things of the world. And,  science continued it, more and more of such 'unexplainables' finding an easy explanation or cure. Now, as our stock of unexplainables dwindle, won't scientific progress slow down? If so, what will happen to scientific thinking? Will something else replace it?