$500 rents just don't work mathematically.

He didn't finish high school and so is missing some understanding in the mathematics arena. 

He didn't finish high school and so is missing some understanding in the mathematics arena.

That requires non-mathematical skills - relationship building, persistence, diligence, organizational abilities - that will help you go ahead of the math nerds ;)P.S.

The less you borrow the easier it will be to handle a downturn, but that goes hand in hand with a lower mathematical return.

At this point with only 6 months left to wait, increasing interest rates, as well as higher debt load from remodel, it may benefit over the long term mathematically with the secured lower rate, because the margins in Denver are tough.

It can be mathematically shown that on average there is no place in the Midwest that on average has produced a better ROI for financed buy and hold RE than San Francisco, San Diego, Los Angeles for 5 years, 15 years, 20 years, 30 years, 40 years, 50 years.    

This has been mathematically proven to give you the 'best' return on money.The down side to a 30 year is you will always be in debt.

I understand that its not mathematically the best solution because we lose tax efficiency, yada yada yada. 

BRRRR is a great model mathematically, but reality has too many unaccounted variables.