Are you qualify to diagnose your tenant health being?

I've been reading about the different types - linear, cyclical, and hybrid - and I wanted to ask -- am I correct in "diagnosing" the VA Beach market as one that is linear? 

Example: Inspector says the HVAC is near end of life, hire an HVAC specialist to come in and diagnose.

It is estimated that 5-15% of the general US population have a diagnosable personality disorder; for incarcerated the prisoners, the numbers I've seen have are north of 65%.

When I was finally born, I was diagnosed with Cerebral Palsy.

Investor B is diagnosed with a brain tumor and despite chemo and radiotheraphies, dies leaving behind a will in which he leaves all his property to his ex-wife because she was his first love, and nothing to his surviving registered domestic partner Investor A except for his ashes to cherish.

-My previous car was a Pontiac Grand Prix which had so many problems, some of which mechanics couldn't diagnose.

There’s no indication that the leak is coming from the roof so it’s got to be from the walls or the ground but I’m at a loss on how to diagnose the cause and fix the problem.

Wow Bobby - Do you do your own plumbing work or hire an expert to diagnose and fix the problem?

Sure, I can call out a HVAC company to diagnose Aka repair the unit to see what it needs.