The software has no problems such as wear, aging, worn-out during long-term operation and use. In the operation and use of any mechanical and electronic equipment, its failure rate mostly follows the U-shaped curve (the so-called "bathtub curve"). That is because just one When the components are put into use, they have not yet flexibly operated, and they are often prone to problems. After a period of operation, they can be stabilized. When the equipment has experienced a period of operation, problems such as wear and aging will occur, which will suddenly increase the failure rate. It means that the end of life has been reached and it is about to be scrapped. What is the following statement that does not fit the text? ['The software does not follow the U-shaped curve in the operation and use (the so-called "bathtub curve").', 'When any machinery or electronic equipment is put into use, the components have not yet run flexibly, but the more useful the better.', 'Software and mechanical, electronic equipment behave very differently in operation and use.', 'Software is not stable for a period of time like mechanical and electronic equipment.']