Why Evolution? (3)

In trying to understand Dr. Howard Van Till's The Fourth Day, it is difficult to figure out which came first in this case, the chicken or the egg. That is, was his view of Scripture first? And did this view of Scripture make room for his evolutionist scientific theory? Or was his evolutionism first, and did this necessitate his view of Scripture? I suspect it was the latter, even though in his book he deals first with his view of Scripture. However that may be, when one reads The Fourth Day he...