It tells the candidate you know what you're doing. Don't be presumptuous. Don't ask the candidate to open his kimono until you've opened yours. Don't poke and prod too soon. The analogy is very apt.
Nothing upsets a job candidate like a presumptuous interviewer, and rightly so.
State your business clearly. You're the host. You asked for this meeting. So take the lead. Then let the candidate show how he'd apply his skills and abilities to approach it all.