"Scientists have expressed skepticism about the explanatory power of neo-Darwinism.
For example, a 2008 conference, commonly named The Altenberg
16, convened sixteen scientists who discussed fundamental problems with the standard neo-Darwinian model, noting that the current model cannot explain the “arrival of the fittest.”
A follow-up conference in 2016 at the Royal Society argued that
--the modern synthesis focuses only on the variation and maintenance of biological features that already exist
--but fails to explain how those novel characters, behaviors, and body plans originate.
All this makes it very hard to justify the position of theistic evolutionists, who claim God uses evolution to create life.
In reality, the more we learn about the complexity and design of life, the less adequate neo-Darwinism is as an explanation."
CaseyLuskin