[hkmurakami]

We can argue whether there are opportunities out there or not (I personally believe that there are), but in this link I see many instances of annual returns far greater than 10%. The writer seems to have an above average understanding of the market (or just got lucky), and presuming that the average Joe (who is the target audience of his blog) can replicate these returns in any given economy sounds rather absurd to me.

Retirement managers typically assumed 8% annual return for portfolios, but in recent years have adjusted this number to 5-6% per annum. The writer's returns are at times more than 3x this number. Generalizing his experience to the wider population is going to be dangerous.