Pre-Evangelism

Not sure if everyone's familiar with this term. Just in case, here's an excerpt from When Skeptics Ask a handbook on Christian evidences by Norman Geisler and Ron Brooks that gives a contrast b/w evangelism and pre-evangelism:

Rather than first trying to lead people to Christ, [the pre-evangelist] remove[s] the obstacles to faith. Rather than just preaching the Word, [the pre-evangelist] spend[s] more time using reason to explain why objections are groundless. Instead of asking immediately for a spiritual commitment, [the pre-evangelist] [seeks] intellectual agreement on the issues that must be understood before the Gospel can be accepted. For example, if someone does not believe that God exists and that He can perform miracles, then it makes no sense to him to say that God raised Jesus from the dead...

In short, it is the mission of the pre-evangelist to remove the obstacles to faith.

I've spent a large portion of the last year preparing myself for pre-evangelism. More to the point, I've probably spent the last 10 years preparing without actually knowing it. I constantly cross paths with people who have strange ideas about the world and about God. Ideas that are based on experiences and emotions rather than on the Truth of God's Word. I've always felt a calling to try to communicate Truth to these types of people.

Anyone have any thoughts on Evangelism vs. Pre-Evangelism? Is one more/less/just as important than the other?