For those who might be mathematically challenged, let's break this down...You just said that a professional tenant could live in your unit for 18-36 months before you can evict them and it could cost "easily...10 times" the $15K price of training. 

But they were just mathematical speculations on the success of mortgage bonds as a whole.

It is a very complex mathematical system that we investors need to be keenly aware of.

Every time I run the numbers I can not mathematically make financing work. 

This helps me sleep at night because I know #2 is the right mathematical decision, but having #1 also helps me with the psychological part of it.

It is mathematical as we have elevated social welfare, worker engagement declines.

There's this intricate mathematic relationship between interest rate,cap rate and IRRSo during QE era.

I live in a college town, where both rents and property values on rental properties are stable and relatively attractive. It seems like it should be a great place to own rental property. But when I run the numbers ...

Will you please share this mathematical formula for calculating appreciation?

The $110k loss was to show mathematically which strategy would make more money in 10 years.I completely agree with you that depreciation shouldn't be ignored, but in my example it doesn't have any affect on the comparison.