Even though I've been at this for 15 years now (not a lot compared to some people) whenever I arrive at the field with a new airplane for the first time I always let the other experienced guys look it over for mistakes and/or forgotten items. I remember a beginner showing up at our field who was confident his plane was airworthy. Had I not tugged on the elevator he surely would have crashed as he had forgotten to glue the elevator hinges in place!