I think the computers is an important invention for all the humanity because, with it, we discovered new landscape like video-games for example. Therefore the computers and laptop are useful for everybody, medical researches are faster with mathematics made by a computer because they are faster than us in this particular domain. In addition of that, for the common human, it is a perfect tool for anything, making a shopping list sync with a laptop and a smartphone so you can bring it to the grocery store, using wikipedia to learn new words, etc. Otherwise, computers can be a little bit scary because if they can make invention faster than us, they are more dangerous than us? Yes… and no, most of the time, it only do what it’s builded for. If it’s job is calculate, they are not gonna building a rifle. But, like the nuclear invention, it can be a good thing, or a bad thing. There is two options that we can be afraid. First if someone wants to make a computer for killing people, in this case, restriction can probably solve the problem. The second option is, if a computer who is hosting an AI with a neuronal-network, decide by itself to kill humans for any reason. This option is the most scary because we have no control on it, but it is the most unexpected because most of researches about AI discredit it. Finally, computers is an important invention for humans because they bringing to us new horizon, and well-used, more advantages than disadvantages.