It's not a question of being smarter or more knowledgeable, but rather that those of us who don't understand the more technical aspects shouldn't assume that others are wrong. If Cody says he's studied it thoroughly and has doubts about Spark, it's likely that he's right, and he's not the only one who has doubts. Even though I use Spark every day, I always remain cautious and simply suggest trying it out, then everyone can make their own choice.