科技使我们的生活素质提高了不止一倍，这可以举很多例子比如：有了电灯，晚上不再漆黑；有了飞机，咫尺天涯不再是梦想。科技的益处是我们无法否认的，但科技如果应用不当，便会给社会造成危害，给人类带来灾难。
就如《隐身人》所说的那样：化学家格里芬经过一番苦心研究，他有一种可以使身体隐设的方法，并在自己身上试验成功。可是成为隐身人的他自我意识膨胀，想在一个地方称王称帝，之后用自己的.隐身技术统治人类，称霸全球。最后在一次追捕中被人活活打死。由此可见把一种科技运用好了，比发明它更加重要。就如DDT，那时人们滥用这种农药，使现在很多生态系统收到破坏，而且这DDT也会通过食物链最终进入人们的口中，最后危害人类自身。就像蛇的毒液一样，如果应用得当，有时会成为救命的一帖良药。药也有三分毒。科技是好的，是有益处的，关键在于人们如何去应用它；应用得好，造福万家；应用得不好，危害自身。
运用好科技，自身也要有良好的心态，在发明科技时，想的是为老百姓造福，而不是怎样为自己谋利，这样才可以算是一个好的发明家。
让我们一起运用好科技吧。
我身上发生了一个相当大的变化！之所以称为“相当大的变化”自然不是指倒事头发长了，个子高了之类。我竟然变透明了，幸亏我是连衣服一起变的，否则这不是不能穿衣服？也就是我，我彻头彻尾地变成了一个隐身人！坐在沙发上对面的镜子只是有沙发陷下去的影子，而根本看不见我的影子。
我顺手从一边拿起了一把梳子梳头，令人惊讶的是，对面的镜子上只反映出了一把梳子梳头，令我惊讶都是，对面的镜子上只反映出了一把梳子在空中飞来飞去呢！这场面还真有些恐怖效果。但是地球还在转，日子还是要过的。我侵无目的走出了家门，发现了一只狗。这个家伙平日总是咬我，今天不如趁着这大好机会好好地把它教训一顿，真是难泻我心头之恨。我走上前去，朝它头上狠狠地拍了撑，那狗大叫起来，却看不见打它的人。我又把它给带到了一颗树帝，把它的尾巴紧紧的系在了树干上。你要是看见它被系在树上，气得连口水都忘了流的样子，一定会被笔翻在地上的！我又上一了辆公共汽车，车上人还不少，对了，我何不抓几个偷呢，我最恨在车上偷东西的.的小偷了。以前中不到小偷，现在我看得见小偷，小偷看不见我，正好抓个现形。
下在我打定主意时，一大队乘客上了车。有一个人贼眉鼠眼的，老是往人群时挤，而且眼睛在人群中扫来扫去的，看人的眼神也十分不对劲。这个人一定不是什么好东西。只见他挤到了一个夹着皮包的老妇人身旁，左手抓住了车厢顶的扶手，右手也相既出去；那妇人还毫不知情，只以为车太挤。哼！只要他感把手伸进去我就开始行动。当他的手伸进皮包后，我用力的地掐了他一下。他手的抖，呆住了，一头雾水地愣在了那儿，不知所措。但小偷必竟十分“坚定”，毫无放弃之间，继续行窃。我一把把他的手攥在了手中。他一惊，用车地把我的手挣脱了，左手迅速把钱夹摸了出来。我又急又气，眼看他又要成功了，我急中生智，向他的脚使尽全力地踩了下去。这一下跺得可不劲，只听见小偷“啊――”的一声惨叫，全身一颤，像踩到了电门一样。要不是人太多，他就倒下了。全车的人都望了过来。那老妇人一回头，发现小偷手中拿着钱包，便大叫起来：“抓住他，他偷了我的钱包！”后来的情况，不不说大家也知道。只不过那个小偷儿被人们逮住时，那一脸的为迷惘与疑惑，还真是可笑。说不定这一辈子他也不会知道这一脚到底是谁踩的。
做一个隐身人，还真是不错呀，既可以伸张正义，又可以做无各英雄。那儿又有几个在殴打一个人，又该我出手了……
As a young man, in the late 1920s or early 1930s, the narrator lived in the South. Because he is a gifted public speaker, he is invited to give a speech to a group of important white men in his town. The men reward him with a briefcase containing a scholarship to a prestigious black college, but only after humiliating him by forcing him to fight in a “battle royal” in which he is pitted against other young black men, all blindfolded, in a boxing ring. After the battle royal, the white men force the youths to scramble over an electrified rug in order to snatch at fake gold coins. Three years later, the narrator is a student at the college. He is asked to drive a wealthy white trustee of the college, Mr. Norton, around the campus. Norton talks incessantly about his daughter, then shows an undue interest in the narrative of Jim Trueblood, a poor, uneducated black man who impregnated his own daughter. After hearing this story, Norton needs a drink, and the narrator takes him to the Golden Day, a saloon and brothel that normally serves black men. A fight breaks out among a group of mentally imbalanced black veterans at the bar, and Norton passes out during the chaos. He is tended by one of the veterans, who claims to be a doctor and who taunts both Norton and the narrator for their blindness regarding race relations.
The narrator says that he has stayed underground ever since; the end of his story is also the beginning. He states that he finally has realized that he must honor his individual complexity and remain true to his own identity without sacrificing his responsibility to the community. He says that he finally feels ready to emerge from underground.
As the narrator of Invisible Man struggles to arrive at a conception of his own identity, he finds his efforts complicated by the fact that he is a black man living in a racist American society. Throughout the novel, the narrator finds himself passing through a series of communities, from the Liberty Paints plant to the Brotherhood, with each microcosm endorsing a different idea of how blacks should beha一ve in society. As the narrator attempts to define himself through the values and expectations imposed on him, he finds that, in each case, the prescribed role limits his complexity as an individual and forces him to play an inauthentic part.
Upon arriving in New York, the narrator enters the world of the Liberty Paints plant, which achieves financial success by subverting blackness in the service of a brighter white. There, the narrator finds himself involved in a process in which white depends hea一vily on black—both in terms of the mixing of the paint tones and in terms of the racial makeup of the workforce. Yet the factory denies this dependence in the final presentation of its product, and the narrator, as a black man, ends up stifled. Later, when the narrator joins the Brotherhood, he believes that he can fight for racial equality by working within the ideology of the organization, but he then finds that the Brotherhood seeks to use him as a token black man in its abstract project.
Ultimately, the narrator realizes that the racial prejudice of others causes them to see him only as they want to see him, and their limitations of vision in turn place limitations on his ability to act. He concludes that he is invisible, in the sense that the world is filled with blind people who cannot or will not see his real nature. Correspondingly, he remains unable to act according to his own personality and becomes literally unable to be himself. Although the narrator initially embraces his invisibility in an attempt to throw off the limiting nature of stereotype, in the end he finds this tactic too passive. He determines to emerge from his underground “hibernation,” to make his own contributions to society as a complex individual. He will attempt to exert his power on the world outside of society’s system of prescribed roles. By making proactive contributions to society, he will force others to acknowledge him, to acknowledge the existence of beliefs and beha一viors outside of their prejudiced expectations.
Over the course of the novel, the narrator realizes that the complexity of his inner self is limited not only by people’s racism but also by their more general ideologies. He finds that the ideologies advanced by institutions prove too simplistic and one-dimensional to serve something as complex and multidimensional as human identity. The novel contains many examples of ideology, from the tamer, ingratiating ideology of Booker T. Washington subscribed to at the narrator’s college to the more violent, separatist ideology voiced by Ras the Exhorter. But the text makes its point most strongly in its discussion of the Brotherhood. Among the Brotherhood, Because he has decided that the world is full of blind men and sleepwalkers who cannot see him for what he is, the narrator describes himself as an “invisible man.” The motif of invisibility pervades the novel, often manifesting itself hand in hand with the motif of blindness—one person becomes invisible because another is blind. While the novel almost always portrays blindness in a negative light, it treats invisibility much more ambiguously. Invisibility can bring disempowerment, but it can also bring freedom and mobility. Indeed, it is the freedom the narrator derives from his anonymity that enables him to tell his story. Moreover, both the veteran at the Golden Day and the narrator’s grandfather seem to endorse invisibility as a position from which one may safely exert power over others, or at least undermine others’ power, without being caught. The narrator demonstrates this power in the Prologue, when he literally draws upon electrical power from his hiding place underground; the electric company is aware of its losses but cannot locate their source. At the end of the novel, however, the narrator has decided that while invisibility may bring safety, actions undertaken in secrecy cannot ultimately ha一ve any meaningful impact. One may undermine one’s enemies from a position of invisibility, but one cannot make significant changes to the world. Accordingly, in the Epilogue the narrator decides to emerge from his hibernation, resolved to face society and make a visible difference.
