Is the Christian Religion based on "Faith in Faith" or does it have a foundation of "Acceptance of Facts"?

Many Christians who attend church, when confronted by inquirers outside the church, who wonder why they believe in Christianity, simply respond by saying, *I just accept it by faith*. Or they might say, *It was good enough for my grandpa, so it's good enough for me.* But in an age of science and technology, which places a premium on "facts, evidence, proofs, etc., those responses seem hollow--even irrational, or at least unintellectual. Quite inadequate to the modern mind enmeshed in collegiate surroundings. The average church-goer seems oblivious to the biblical aspect of *apologetics*. Nor do they understand the exhortation of Saint Peter: >Sanctify the Lord God in your hearts, and be ready always to give an answer (Gk. apologian) for the reason (Gk. logos) of the hope that is in you with meekness and fear. (1 Peter 3:15) This leaves the Christian, especially the Christian student, in the lurch, susceptible to attacks of doubt by professors, as well as peer pressure from culture. So should pastors and teachers equip their congregations with occasional sermons on the *evidences, infallible proofs (Acts 1:3), metaphysical proofs (Romans 1, Acts 17:18-34), reasons (1 Peter 3:15), supernatural conclusions (John 5:36 miracles), eye-witness testimony (1 John 1:1-3):* things which would provide a "reasonable response" to skeptics who doubt these revolutionary facts"? Or is "faith in faith" without proofs, or "blind faith" as some would call it (uninformed faith, that is), sufficient for Christian believers? Should this be the biblical approach for preparing congregates to survive in modern society? What is the correct definition of "faith"? What is the best definition that would be adequate for the modern mind, and cause him to consider Christ as God?