>Most people in nearly every company from the PA to the CEO sits at a desk with a screen and makes clicking sounds 95% of the time. With the minor process of of 'talking' added, this is the basic description of ~all jobs.

Huh? Even if we restrict things to the civilian sector, there are a LOT of jobs that don't involve that-- police, firefighters, EMS, doctors, nurses, farmers, manufacturers, construction, etc.