The ability to create, to keep and to perfect instruments of labour among animals is present only in monkeys. As they have hands. And those who have paws just don’t have with what to create. Let’s imagine a monkey that has a problem: for example, a banana, which is behind the grate. It can’t be reached neither with hands, nor with a stick. The monkey is musing. And then it gets an insight. This stage is even called like “insight”. The monkey finds a string and another stick, which were left by the experimentalist among other things. It creates first though elementary instruments of labour: two sticks are combined together.

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