[neutronicus]

I thought "hard" was meant in a purely technical sense.

But anyways - three smart guys in a garage can build a minimum viable photo sharing application using knowledge and technology obtained from the internet.

You can say "oh, it's hard to do photo sharing right, it's a hard problem", but the fact is there are technological problems out there that are hard to do at all, that are completely beyond the reach of three smart guys in a garage using only knowledge available on the internet.

[jamesrcole]

If we're talking about the article, I don't think they were implying anything about technical difficulty (it doesn't even use the word 'hard'), but more about importance (the significance of the consequences). edit: removed typo.