disadvantage of technology

The 20th century saw many great inventions,such as airplanes,motionpictures,television,telephone,computer,the Internet,to list just a few.Each of these inventions bears witness to the amazing advancements in technology in the past century.These inventions made our lives much easier and much more enjoyable. However,progress in technology is always a double edged sword.People invented pesticides to kill pests but pesticides can pollute the environment by entering the water supplies and harming birds that eat the dead insects.Cell phone has greatly facilitated communication yet it has been proved that it poses danger to users’health.What’s more,cell phones often go off during movies,concerts,classes,meetings,and libraries and create public nuisance.Automobiles have become an indispensable tool to the modern man but they consume great amounts of fuel,and create enormous environmental problems.Also,many people are killed in car accidents everyyear.Internet links tens of millions of people around the world but people are so addicted to the Internet today that they don ’t go out and do exercises.In a word,technology can be put to good use only when it’s used properly.People often find it hard to balance the convenience brought by modern technology and its potentially harmful effects. Many people believe that the biggest disadvantage of technology is that it may give rise to some unimaginative negative influences.I believe the average people should be educated about the potential harmness of technology and should always use it with a mind to promoting the teamwork spirit.Today, we can't imagine ourselves without technological advances such as cars, microwaves, cell phones, computers, and televisions. However, technology won't stop here, but develop further. As technology develops, there are not only advantages, but disadvantages from them. The disadvantages of upgraded technology are that people will loose their jobs to machines that will do the work for them. In addition, machines and robots are too complex for most people to use.As there are so many advantages from highly developed technology, there also is a great deal of disadvantages from them. One disadvantage is that as technology develops, robots and machines will take over many jobs and people will loose their jobs by contrast. As people loose their jobs, they will have hard time getting money which would make it hard for them to continue to meet living expenses. Moreover, as people use less money the economy would be difficult to control and especially if it is a country as large as the United States, the problem will influence the world greatly.Another disadvantage of highly developed technology is that machines and robots are complex. It is hard to activate all the machines you have unless you can multitask. Think about it, if most people have trouble on computers and almost all of us don't know the actual limit of computers' abilities, how will us, normal people, work with all the robots and machines? Moreover, just like computers, robots and machines will easily break and most time you won't know how to fix them and one will have to call someone to fix them. People will loose their temper over this and it will create a large expense to repair them.电脑的缺点：There is no denying that a computer offers us convenience and benefits. In spite of its advantages, its disadvantages are also evident. First, more and more students lose themselves in computer games, which is not only waste of money but also waste of time. Second, there is much false information on the Internet, and sometimes it is very difficult to distinguish what is true and what is false. Some people even commit crimes through computers.The disadvantages of the computer also exists in the matter of widespread access of internet. With internet, online crimes can be commited. Underage people are also able to view adults only websites. Another disadvantage of computer is that it's bad for eyes and general health.The computer also has many is bad, if to the elementary student, I wants to say plays the computer the question. Now the family economical level enhanced, the elementary student vision dropped actually, this is plays the computer the fault. The advantage very are also many, for example chats, said the topic and so on some beneficial games can cause elementary student's after school life to be more interesting. But cannot sink confuses in the computer games. Some real matter meant, a child,For computer games in hypothesized duty battle, own jumped from an upper story. Therefore, plays the computer not to be able to fall, after on the one hand which falls to does not have the advantage.The high tech product increases day by day,Computer these high tech product,Has brought many conveniently to the people,Might also bring the misfortune to the people核弹的缺点：The main disadvantage is public fear and opposition, based on Chernobyl, atomic bombs and Three Mile island, although Three Mile island does not really belong ion the same category as the other 2. That is just an indication of the level of public distrust when they equate Three Mile island with Chernobyl. There is no comparison at all.The next disadvantage is cost. Nuclear is expensive. Partly due to safety measures and partly because uranium is a rare and expensive fuel.The newest, and possibly most damaging disadvantage is nuclear proliferation. The world does not want to see nuclear reactors in the hands of every country in the world, because it would make nuclear weapons much easier for those countries to build. It is one thing for the U.S and France to have reactors, and another for Libya, Iran and North Korea to have them.On the up side, nuclear plants do not emit carbon dioxide, or any pollutants really. And they are really powerful. The main disadvantage with wind and solar is how weak it is. Nuclear definitely does not have that problem.The disadvantage is radioactive waste. What do you do with the spent rods--which will be radioactive for years and years and years into the future.The main advantage is the efficiency of the power generated. A lot of power is generated using nuclear power.Disadvantages include workers are required and the waste is almost impossible to dispose of without destroying or harming something.global warmingother countries using nuclear weapons against usand the ozone layer is getting worse all the timeDisadvantage= whiners complaining about possible meltdowns and nuclear disaster...(you have a better chance at having a 747 crash through your livingroom wall.) Radioactive Waste (why couldn't we justship it to the center of the solar system once a year?) Oh yeah and the big Disadvantage, less digging. A Mole has to work to ya know... Overall the reasons against Nuclear Power are far outweighed by the benefits of it... TMI and Chernobyol where flukes...Advantages - more efficient than coal and hydroelectricity, doesn't contribute to global warming,Disadvantages - radioactive waste to dispose of, limited fuel supply, risky operationDid you know that if the world converted to nuclear energy tomorrow for all its energy needs, all of the worlds uranium supplies would be exhausted in 6 years.The advantages of nuclear power is there are less greenhouse gas emissions then a coal-fired plant so nuclear plants are cleaner there is strict control over the radioactive waste produced and there are a lot of jobs at a power plantdisvantages are even though the waste is watched carefully there is still concern over nuclear proliferation from other countrieseven though some people are worried that a plane could fly into a plant it would not blow-up like a bombthere have only been two major accidents chernobyl, three mile island. chernobyl had a full core melt down and three mile had a partial core meltdown chernobyl leaked radiation which spread across europe and three mile leaked very little克隆的缺点：Disadvantages of cloningIn June 1998, president Clinton publicly condemned human cloning. He opined that ‘any discovery that touches upon human creation is not simply a matter of scientific inquiry. It is a matter of morality and spirituality as wel l. Each human life is unique, born of a miracle that reaches beyond laboratory science.’ When did president Clinton condemn human cloning so resolutely?The uncertainty of science technologyin cloning Dolly, it resulted in the death of many embryos and newborns before success achieved. （The Dolly experiment started with 277 fused eggs, of which only 29 became embryos. All the embryos were transferred to 13 sheep. 1 became pregnant with Dolly.)In addition, even if the human clone survived, it is not guaranteed that it would develop normally. The genetic material in cloning Dolly came from a 6 year old mammal (what is an old stage of sheep). Dolly’s chromosomes could be found in older animals only. This finding made scientists start wondering whether Dolly, looking totally normal from its appearance, might have inherited genetic damage that would be shown in older age only or some other abnormalismLosing the diversity of genesHuman can live on the Earth relies on the diversity of genes. And the diversity of genes comes from parents having different sets of genes. The most horrendous part of identical genes is that it will weaken our power and adaptations, which make us subjected to great diseases easily. In addition, human cloning is just copying the identical genes, which means it will decrease the diversity of genes.Furthermore, the beauty of humanity lies in the differences we see in each other. Cloning would eliminate surprise and predict expectancy.The great diseases and leading to extinctionAs mentioned above, in human cloning, all human beings will be identical. Which means that entire human is at a risk of getting infected by the same type of pathogen. In scientific point of view, if every one has the same type of genes and they are closed to each other they may not defend against the same kind of serious disease. Then cloning will be detrimental in terms of a great disaster.Cause unbalance to the societyCloning may arouses social side effects. It is ridiculous that reproduction is separated from love and other human relationship. The entire world may use cloning for eugenics that would lead to efforts to selectively breed children who are of more intelligent, heavier and extraordinary.电视的缺点：It become to be very popular and common. Almost everyone has his own tv-set. People spend to much time watching stupid programs and shows. They become a slaves of 21' black box. You can't talk with them about anything isn't connected with television. Their life is depend on tv-schedule. The whole families watches television eating dinner, sapper, spending their free time in this way. Instead of going to the park, wood, to the lake or for a trip.Nowadays there is many violence on tv. Jung children are watching full of violence and brutality cartoons and movies. They spend whole day siting in front of screen. Every tv-station broadcasts many commercials, the movies are being interrupted and we are watching commercials for few minutes. We also have to single out the really interesting programs and movies because there is many stupid and boring programs.。