Lewis's argument from reason may not be persuasive to all, but I think it supports the notion that the eternal Logos illuminates all human beings via the light of reason.
For me, that leads to a separate problem, namely, that our choices and judgments can't be free in the way that we tend to think they are free. They are caused by prior physical causes. Maybe that's too simplistic. But it doesn't seem to pass the common-sense test of how we experience life.
On the other hand, folks like Robin Bradley Kar are willing to bite the bullet and agree that what we take for knowledge is no more than an effective evolutionary capacity that enhances survival. Book chapter here: https://academic.oup.com/nyu-press-scholarship-online/book/15095/chapter-abstract/169530350?redirectedFrom=fulltext
For me, that leads to a separate problem, namely, that our choices and judgments can't be free in the way that we tend to think they are free. They are caused by prior physical causes. Maybe that's too simplistic. But it doesn't seem to pass the common-sense test of how we experience life.
Indeed, it defies our phenomena of experience. But that too, according to Kar, is an epiphenomenon of evolutionary development.
Well, then I suppose that it would be hard to live on this point of view, although I am sure Kar makes it work. I'll have to read him!