As people's lives change and develop

The two may not make much difference, but which do you think is the meaning?
1.As = incremental change of people lives' changing and develp.
2. As = In the same way people's lives...

rp9-74)Languages of the world have proven time and time again that they are flexible enough to meet the needs of their speakers. It has been found that all languages are able to express any new event or thing that a speaker comes across. As people's lives change and develop, so does the language of their culture. Vocabulary, idioms, and popular sayings all reflect the needs of people....

In the same way that ...