What is Wolfram|Alpha?
Wolfram|Alpha is an engine for computing answers and providing knowledge.
It works by using its vast store of expert-level knowledge and algorithms to automatically answer questions, do analysis, and generate reports.
Video Introduction:
Wolfram|Alpha in a nutshell
WOLFRAM|ALPHA uses built-in
knowledge curated by human
experts to compute on the fly a
specific answer and analysis for
every query.
SEARCH ENGINES index web
pages, then look for textual matches,
then give you lists of links to follow.