My Earth after 300 years

It is very difficult to imagine what the Earth will be like in 300 years. We can’t say for sure whether there will be robots or flying cars. I think that the Earth will be completely electrical and we won’t use any kind of fuel. Computers won’t be so big and expensive. We will have cheaper and more effective computers, they will perform more functions for people. They will be equipped with light system which when a person wants to use it, the light will emerge from the computer and will be reflected on the wall. There will  be also electrical bikes and motor-cars.  I think, that we will be able to make them flexible. They will be smaller and it will be easy to take wherever one wants. Schools will provide more efficient and accessible methods of learning. Every pupil in every school will have a separate table with a computer. Also, students will come from all over the world and will be trained by headphones. This method is more effective than the method used in public schools, so pupils will have a lot of friends from different parts of the world. In hospitals physicians will be robots and there will be no operations as the robots will inject specific substance in humans’ bodies that will be able to cure the disease quickly.  In my opinion, people will change their attitude towards robots. People and robots will be friends and will make families.