Your friend saw this resource on bethinking.org and thought you should see it:
Agnosticism and Christianity
In this talk, Dick Keyes considers what agnostics believe, why they believe it and whether they are justified in believing it. He then asks where this leaves the agnostic in his search for evidence…
See the full resource online by visiting bethinking.org:
is a collection of resources which aims to make sense of the big questions of life about God, Jesus and Christianity.