<span>In the sense of getting the country back into profitable big business, Harding was successful in a "return to normalcy." That said, his presidency was marked by scandal and corruption and he died halfway through his term, so it's tough to consider him a successful president. </span>
The workers didn't learn how to completely manufacture a certain item. Instead, they learned a certain part of the process in manufacturing such item and they will repeat such process again and again, all day long. This is how the development of the industry impacted the way people lived and worked.