Whether the technological revolution will increase unemployment is a problem that has long plagued people. From some statistics, people have found interesting phenomena. Although the United States has invested heavily in computer technology and other aspects over the past years, its current unemployment rate (approximately 5.5%) is not higher than the unemployment rate in the early 1960s, and in Western Europe it is 11%, where investment in computers has been less than in the United States. Which of the following can be logically derived from the above text? ['The development prospect of information technology is very broad.', 'Information technology needs to evolve faster.', 'Information technology does not cause unemployment.', 'Development of information technology will not increase unemployment.']