Why the world keep developing?

I was always wondering why people are working but not sleeping all-day long. People do so because the food is not automatically generated but people are working on it. This is valid not only on food production but also on shoes companies, supermarkets, school, and any other types of institutes.

Ok, I agree with the non-automatic production system. However, why the company develop their products every 3 months (e.g. in Japanese mobile phone market)? This is because our society is competitive. The companies want their products to be bought more and more. If Sony develops 4D television, then Samsung will try to reach 5D television faster than Sony.

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