Although the world is glorious because of inventions, individual inventors still often struggle in adversity. The market only recognizes products with direct consumption value, and few people will "pay for" the ideals of inventors. There are professionals in the world Teachers and scientists, because people recognize the importance of education and science to human beings. Teachers and scientists can nurture students and explore the universe without worries; however, there is no such profession as "inventor" in the world, and no one pays for invention Home salary. The main text of this paragraph is to express;. ['The development of the world cannot be separated from the invention.', 'Inventors are in a more difficult position than scientists.', 'Inventions usually have no direct consumption value.', 'Society should provide more protection for inventors.']