I like a set of switched outlets along each wall near the ceiling. You can then hang tube fixtures where you need them. Easy to change if you add or move equipment.

This is a pet peeve of mine. When hired, he agreed to abide by the policies in the original handbook. The company doesn't have the right to change those policies without re-negotiation. I've seen this issue arise with regard to ownership of IP not developed directly for the employer. Your attitude is the reason some companies should have unions inflicted upon them.

A/D and D/A are used for many applications and signals other than audio. Software radios and image processing come to mind.

You need to something outside yourself to fill the void. Seriously consider getting involved with a charity or non-profit that is aligned with your interests. Volunteer at an animal shelter, deliver meals on wheels, help build hiking trails, organize car club events. Whatever gets you out of the house, out of the office, and involved with people can help.

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Teach those who will learn. Bill those who won't.