So it is conceivable for these "investors" to consider cap rates in valuing the SFRs.So,"Do I look like I don't know what I am talking about if I market a SFR or duplex and mention its cap rate?"

It is conceivable you could see a one dollar US minted coin be worth 5 (or more) of the Federal Reserve notes.

You have access to tens of thousands of forum posts that cover every conceivable strategy in RE investing, its better than a gold mine. 

Going into work and knowing you don't have to work is an amazing feeling.Whatever the mind can conceive and believe it will achieve.  

It is conceivable I could do a short sale and retail the house.

Lincoln at Gettysburg, he said, among other things, a nation so conceived and dedicated, will it long endure.

@Celine Crestin has a good alternative point: If the right deal were available, you might conceivably buy a property in all cash (using the HELOC) and then refinance most or all of your money back out.

Realtors will always have a place, but I remember in the late 90's when I first heard about online brokers and the thought was foreign, today I cannot conceive using a real live brick and mortar brokerage.  

I have seen where there is confusion of the lot lines and seemingly there is a house, but it is actually on the neighboring lot.It could conceivably happen, maybe somebody built a house without a building permit?

I have a lot of people that never wanted to Partner with me seeing me as their potential future Partner.There are still disadvantages I still have to overcome, such as now I am a Real Estate Broker and I need my Clients to not have pre-conceived notions of what I can do for them.