In modern society, machines work mainly in the production progress and humans only have to control it. Therefore, there are more supply sources than demand on marketplace. To prevent an economical crisis,
To me, these sound a bit off-topic. I don't think advertising is a measure to prevent economic crises.
Also, you didn't state your opinion clearly.
I was once told not to believe in advertisements because they are not true
Readers still have no idea which view point you side with.