This is because: 1, different people have different views on happiness. Even if there is a "view of human happiness", everyone's understanding and explanation are different; 2. The concept of "happiness" is also constantly changing and developing. It develops with the development of society, and society develops with the development of productive forces and the progress of science and technology. Imagine if the ancients knew that they had the enjoyment of electric lights, telephones and televisions, would they yearn for happiness? Now we enjoy it, but we don't know when to be blessed; The relationship between scientific and technological progress and happiness is not direct and immediate in some aspects, and science and technology is a double-edged sword. Humans can use it to benefit, but also bring disaster because of improper use. Finally, happiness is a sense of satisfaction after comparison, which has nothing to do with scientific and technological progress. By comparison, this includes one's own comparison or comparison with others. Some people feel happy, while others feel unhappy. This is why technology is getting more and more advanced, but some people still don't feel happier.