Now many of my classmates like to surf the Internet in their free time.I think Internet can bring us both advantages and disadvantages.For example,if I have some trouble studying, I can surf the internet to find more helpful information. And I can make more friends on it. Some of my classmates say they feel happy when they talk with more friends with many similar hobbies.However, Internet can make some problems at the same time. If you spend too much time on it ,you will becaome lazy and can't put your heart on study. It will be even worse if you feel you can't live without Internet. So we must be careful when we use the Internet.
Computers are now essential in many areas of life—modern banking, retail and information exchange among others. However, this is not true for education. At a simple level some subjects may be better taught using computers, but to explain important concepts a human teacher is still indispensable.
There are some subjects in which a computer can be used successfully to teach. Elementary mathematics, elementary language leaning, any area which requires a student to memorize basic facts through repetition is well suited to computer learning. The computer can be programmed to provide an endless number of simple questions, and as the student answers these questions the facts are learned and reinforced.
However, in the learning and practice of more complex ideas, the computer is not adequate. A computer can evaluate an answer as right or wrong, but it cannot determine why. It cannot find out why a student is making mistakes, and then re-present important concepts in a different way so the student will understand. It cannot determine at what stage in a mathematics problem the student has made an error, it can only indicate that the final answer is wrong. Tasks involving reasoning cannot be taught by computers, as there are too many variables for a computer to deal with successfully. Thus, while computers may be useful as a tool for practicing simple skills, they are not an essential feature of modern education, because they cannot monitor a student's grasp of concepts, nor evaluate a student's reasoning. Until further developments in computers are made the human teacher will remain indispensable.
A carbon-based error refers to a problem with a computer or a program that is caused by theuser rather than the machine. All life on earth depends on carbon, which forms the molecularbonds that make life possible. Therefore, to say that an error is carbon-based is another way ofsaying it was caused by a computer's human user. Carbon-based errors are a common problemfor IT professionals, particularly when it comes to inexperienced users.
This slang term is most frequently used by IT professionals and other tech-savvy individualswho are always being called upon to fix errors that have nothing to do with the technology.