Complex sentence: There has been a shift from a mechanical environment to one where ever more people spend their days dealing with other people, symbols, and information, whivh means that workers in the knowledge sector must exercise their own judgment and choice.
Split into simpler sentences: There has been a shift from a mechanical environment to one where ever more people spend their days dealing with other people, symbols, and information. More than just a cog in the machine, workers in the knowledge sector must exercise their own judgment and choice.