We could not get everything from Nature. So, we invented things. Even now we do not get all things from Nature. So, we are forced to invent things. When men were hunters, they had to invent tricks for catching wild animals. When they needed fire, they invented it. When they wanted to cross the sea, they invented boats and ships. When they had to fight with animals they invented weapons.
They wanted to spread news and knowledge, so they invented the writing system and the printing press. We may run short of petrol in a few years. We shall invente some thing to replace it.
So necessity is called the mother of invention. Invention is due to necessity.
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We could not get everything from Nature. So, we invented things. Even now we do not get all things from Nature. So, we are forced to invent things. When men were hunters, they had to invent tricks for catching wild animals. When they needed fire, they invented it. When they wanted to cross the sea, they invented boats and ships. When they had to fight with animals they invented weapons.
They wanted to spread news and knowledge, so they invented the writing system and the printing press. We may run short of petrol in a few years. We shall invente some thing to replace it.
So necessity is called the mother of invention. Invention is due to necessity.