Take the following as truth: I use both commercial software and free software in the course of my work (I'm adminstrator of a large number of NT and Unix computer systems), and it's pretty clear to me that it's the free software that is rigorously tested and the commercial software that gets released just as soon as it appears to run.
Then the following statement: "I use many types of software in my work." is true, false, or inconclusive?
Answer: True