Isf class is three days. To become an engineer is usually a four year program at a university.
They are not engineers... Nor are they doctors.
Certified techs at best. And yes they fly the ISF flag because they are allowed to.
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In other words, comparable to a Chiropractor being allowed to call himself "doctor"
The problem that arises for Comcast/Xfinity is that they allow the mode of improvement to get in the way of actually improving.