Why would it have to be life changing in order to be useful? The trade-off could... | Hacker News

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		0x12 on Oct 19, 2011 \| parent \| context \| favorite \| on: Khan Academy Triples Unique Users To 3.5 Million Why would it have to be life changing in order to be useful? The trade-off could well be watching soaps vs re-doing your high school or university level math.

mrchess on Oct 19, 2011 [–]

I meant useful or lifechanging as two seperate questions -- no correlation.

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