I know I’ve confessed my love for Google, but it has its limits. Like the phase of the moon today. Or how many feet in a yard. It doesn’t try to find a website to answer the question, or a million websites, WolframAlpha answers the question.
I came home today and my son was struggling with an equation in pre-algebra. I wasn’t 100% confident that I could solve the problem correctly, since my son argued with my answer. So, just for the heck of it, I put the equation in WolframAlpha and guess what? It solved it and showed its work.
Big difference. Nothing like the beautiful elegance of a computational knowledge engine.