It was a very good exercise for leaning cap ex/maintenance costs and mathematically showed that many investors are using too low numbers.  

When you buy stocks, you're setting your intuition and understanding of the marketplace against professionals, guys attacking the prediction of stock prices using advanced mathematics and modeling.

PHH sent it to their "internal reconciliation" system - Altisource - which is in bed with Ocwen which also owns PHH and suddenly the reconciled value on 3/4 = $400,000 without EVER having stepped foot in the property, so as much as I would love to believe there is some amazing mathematical system in place that spits out a number for the banks threshold to buy, sell or whatever, I can't see it. 

Calculating a cash flow requires a mathematical equation and it goes up and down based on the inputs.  

Yes, you can definitely use TurboTax to do your returns, what we do isn't theoretical physics, quantum mechanics or advanced mathematics. 

But we are all out our opinions, no matter what laws of nature or mathematics they violate :-)It sounds like you can distance yourself from the sales and mentoring aspect of the presentation, and that is very good.

Once that happens, as long as you don't have to come out of pocket anymore, the property is free to you.Anytime you pay all cash for a deal, that "all cash" may get you a discounted price for the property, but in in fact means it cost you more for the property unless by some mathematical miracle the resulting CF pays back the entire cost of the property faster than having the CF from that same property using a 20% DP and financing would. 

The only cost to the REI is the cash they put in, so this starts with the smallest DP possible, and positive CF.2 - The terms where someone/something else pays for the rest.How you design those two things are based on the strategies you develop over time, an in depth understanding of math (geometry and algebra) as it applies to money, and your ability to correctly (mathematically) analyze markets. 

Saying you're getting your original investment back first results in the exact same mathematical returns as saying you're getting your profits first and your investment back later.In the example above, all that matters is that you received $100,000 after 2 years and $10,000 a year after that.

Fractional reserve banking is a mathematical technique, any business can make use of it.