Nowadays, the progress in science development is so fast, that it is impossible to follow all the new knowledge being obtained. About 2.5 million new scientific papers are published each year in peer reviewed journals. This means 2.5 million of the new important results giving new knowledge for various fields of the human life.
That is why every next year we have to know more than in previous one. And we have to learn more, and we have to study more.