We must admit that most inventions devised over the last hundred years make our lives convenient and easy. For example, a refrigerator can keep meat fresh for a few days which was impossible in ancient times. But some inventions such as cars and phones have pros and cons. Cars can help us travel long distances within a short period of time, but the pollution they make is really serious / concerning. We can almost do anything with a smart phone, but if we leave it for a few minutes, we will start to feel anxious and lose interest in everything else. Smart phones are just like drug which can easily make us addicted and change our lifestyle for the worst or even cause diseases. Nobody knows what electronic devices we will use in the next ten years, just like we didn't know what smart phones were many years ago and how they would change our life. In that case, we also have no idea what kind of technologically advanced products the future is going to bring us, will it be a pleasant surprise or a dreadful one?