Son, Apple computer will not significantly affect CPI. If you are asking about electronic products. The technological progress of electronic products, but the price has not increased significantly, is because only some technologies are realized in the form of patent fees, and more are enjoyed by all mankind, that is, positive externalities. The existence of this situation has not raised prices, that is, CPI should have been higher.
The salaries of public teachers and doctors are the same. If all their efforts are market-oriented, CPI will be greatly improved. Especially in the service industry.