It's been interesting to see how commentators about the economic situation in Greece have been largely lagging the situation. First, most of them started on "Greece must (and will) sort itself out, default is not an option", with exit from the euro an unmentionable and almost unimaginable event. Then, the tone moved on to "default could theoretically happen, but it won't - and it shouldn't - because the other governments will put such pressure on the Greek government that they will be forced to do what they should", through "it might happen, but that would be a disaster (which of course we will avoid)", and now starting to come to "it might happen if we're not careful", and a few brave souls at "actually, default and exit from the euro is the best hope Greece has". Of course, as and when Greece does default and leave the euro, there will be detailed discussion of 1) why that was always inevitable and 2) why it was a still bad idea. When you see this sort of drift in comment from established "opinion leaders", it's a good reminder of how unpredictable the world can be.