For the words and sentences this paragraph is a simple one in this article.

There is no new word or complex sentence. It is simple to read. And how about understand?

With the continuing rising of living standards the happiness is expected to increase.

What is the fact? Actually improvements in the economy could not be completed to a steady increase of people’s happiness. Maybe a given level of income leads to less satisfy. People could not enjoy more from a salary for long time.

Why? How to explain? Where is happy from? Are there some special elements we don’t know?

Or something we haven’t noticed. We should believe to psychological or physical? Which is more important?  Who control the whole style? If we know all truth is that mean we can be happy? If there is no sad, pain, frustration and so on, what is the happy mean?