Unless you live under a rock, or are addicted to the crack rock, chances are, you've seen and/or heard of the new Microsoft Search Engine,
BING. Oh wait, I mean "decision engine." That being said, Bing is essentially exactly the same as the old Microsoft Search Engine(s) - just rebranded. Sure, it has a couple new cool features - like being able to preview videos in the video search (and sometimes bypass filters at work) - or being able to see when the price of plane tickets will go down (which is nice, if you have a very flexible travel schedule - but it won't tell you the cheapest ticket to find today).
And then just this week, a new "decision engine" was launched by one of the co-founders of Flickr, and this "decision engine" is called
Hunch. This particular decision engine works basically like a quiz engine - yes, just like those annoying quizzes you see on Facebook or signed up for on OKCupid.com three years ago. Though Hunch has some potentially more useful capabilities, I'm sure it'll be dumbed down just like Twitter.
But what decisions ultimately come down to is the data available. When you buy a car, it's not (at least I hope it's not) because a website told you - this is the best car. Rather, it's because you were able to compare the specs of the car you chose to other similarly priced cars (after you've figured out your car budget) and determined that you like this one's safety, reliability, fuel economy, number of cup holders, engine power, and aesthetics.
Or when choosing an MBA program, it isn't because a website said - this is the best MBA program for you. It's because you spoke to alumni, current students, researched career placement/advancement, looked at starting salaries of graduates, courses offered, other opportunities offered, name recognition, and so forth.
Perhaps when all of this data is compiled into one place, then you'll be able to use a "decision engine" - but even if all this data is put into one place - ultimately, how different is an Accord v. a Camry, or Harvard v. Yale? It just comes down to emotion, and no computer is going to be able to help you make that decision. You'll have to rely on the best decision engine available to you - your brain.