Greeks are being expected to do business and compete with the rest of the world at the same exchange rate and with the same interest rates as Germany, which would require their manufacturing, their education and their enterprise culture to be at least similar to those of Germany. In their lifetimes they are not going to be able to do that. This is not because there is something wrong with them; it is because they live in a different economic environment from Germany, and one that is not suited to being in the same currency.