Invention, advantages and disadvantages This invention is the internet, which is a communication network and has the advantages of fast access to a lot of information, the ease of communication and reduces the need for presence. But, it also has great disadvantages if you do not know how to use it, such as cyber bullying, over saturation of information and also the threat to our privacy. The internet is one of the best inventions and makes life easy, but if you don't use it in moderation it can become a nightmare. Technological advances in the 21st century My favorite is the smart home, they stand out, above all, greater comfort, greater security in the home and greater efficiency, for example, you can turn on the lights, the washing machine, the air conditioning, even in the health area you can use this type of technology. The disadvantage is that the electricity bill goes through the roof