I've been following WolframAlpha for some time - they have an intriguing (some may say mysterious) business model based on a very powerful semantic search platform with ability to answer any and every question with speed and accuracy. I was intrigued therefore when I came across these (new?) apps, which appear to be opening up an entirley new channel for online/mobile education.
No doubt other players are looking at this market (Open University?) but I think that WoframAlpha are currently ahead of the game.
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