Prices on houses have to come down, there is no mathematical way that prices stay this high with a mortgage rate in the 6-7% even higher range.

Amortizations is a mathematical calculation that shouldn't change from lender to lender. 

This is not opinion, this is fact that I have proven mathematically over and over and over agian here on the forums.

Have a BA in mathematics and Masters in Accounting.

@J Scott ,,,except, that by calling it a "rule" it is inferred that it is a, well a rule. from Merriam-Webster Dictionary:Rule - a prescribed guide for conduct or action, an accepted procedure, a standard of judgment, a regulating principle, a determinate method for performing a mathematical operation and obtaining a certain result, 

Only after gaining a knowledge and understanding of the legal aspects and the mathematical formulas will you be in a position to be able to decide which aspect of note investing to pursue and be able to properly evaluate individual debt investments.  

Let's run a $500k scenario both extremes, 3.5% down FHA and 20% down conventional.These are CA numbers for things like prop taxes, but the concept should carry over identically.Let's pretend yours is a market where sellers do not frown on 3.5% down FHA, and let's pretend closing costs and/or what you can negotiate with the seller are identical and can thus be ignored.20% down: $100k down, PITI $2600/month.3.5% down FHA: $17,500 down, PITI $3400/month.FHA is $800/month more, but you got to keep $82,500 in your pocket.The FHA scenario where you pay $800/month to keep $82,500 in your pocket is mathematically very close to the following:3.5% down, first mortgage 80% LTV, 2nd mortgage for 16.5% ($82,500) hard money at a rate of 11.6%, interest only.

Good questions, I remember when I took the first CCIM  course,(in the 70's) they talked about the Internal rate of return and other mathematically systems to come up with a rate of return on investment.Well...............I decided if I have to go thru all those calculations to find out how much I was making, I decided I did not have to be all that sophisticated.

I am a recent college graduate in mathematics and, having no desire to work for someone else, I've become interested in real estate.

@Jon Nelson  I'm being super careful with my numbers but obviously as I said, those are just back of the envelope numbers non-withstanding  the mathematical differences from the mean and the medium home price.