Those losses can be substantial, by the way within an HVAC system-Again I doubt these technologies would hold up under scrutiny within a court of law because all it takes is one person with even a basic grasp of principles of engineering and you’d find an easy 10+% delta in these systems’ measuring abilities.

It's possible and I personally know people that this has happened to.

Quote from @Dylan Jeluso: This questions is the same question as getting your real estate license when doing flips, you have access to the MLS, you save money on the commission, and you have a little bit of a competitive advantage over the next person that is not licensed.

Have a computer nearby so I can walk you thru a market analysis real quickly.  

U buy the juice wholesale put in delivery system in your property set it up like Tesla Superchargers were the person charging pays for it on an app on their phone. 

He’s at the mercy of someone else’s expertise, motivations, personal interests, perception, and knowledge.  

Typically in Kihei the 1 beds offer a better cash on cash return but if you need a 2 bed for personal use that would make sense . 

Large non-refundable EMD will overcome not seeing it in person. 

In-person courses could help you retain the information better.

Having said that, before you dismiss a sponsor for violating this guideline, take some steps to ensure you are communicating with the right person, and that communication is actually established.