In the excerpt, this author is claiming that the discovery of certain things has helped man to meet their needs for things such as light and heat, but other inventions such as the dishwasher and cell phones are not necessary inventions.
The author tries to say that human beings have to try as much as they can to change their lifestyles in various ways.
In order to do this, people have to make use of less fossil fuels and they also have to use renewable energy to get their electricity.
Read more on fossil fuel here:
https://brainly.com/question/10172005
