What is the role of speech in the organization of work?

For work, speech is very important. Speech is well developed in humans. Thanks to this, anthropogenesis was possible. Speech is important for the transfer of information between people. There is a distribution of labor due to the ability to transmit information. Also, speech helps people accumulate knowledge. Other types of experience are lost on death. We can pass it on to other people, descendants, save it and distribute it. Thanks to this, our work is effective and is constantly simplified so that a person spends less energy.