Maybe not the most mathematically optimal solution, but we will be proud to pay it all off fast and never have to think about it again.

If you followed a blog that told you the math didn't matter, you should do this instead, and then gave you an affiliate link to an investment that was mathematically inferior you would likely stop taking the advice of that blogger.

More and more profit systems were built off of it, corruption came into play, valuations ran wild and all involved were so drunk on profits that all simply turned a blind eye to the mathematical facts of it all instead playing into the denial of any whistle blowers. 

Hi @Eric Li,Mentality: You and I are very much alike; you are very analytical, which is a gift, but it also can trick you into thinking you can outsmart the future and mathematically win at investing. 

I also had degrees in Mathematics, Computer Science and Physics (minor) and thought that if he could execute, he would own the industry. 

You're not buying a mathematical share of a corporation or a virtual slice or a business.

Your advice is so narrow minded to full time or homebased investors I can't believe that I am the only one that ever sees this when they read your posts.I will never personally throw away a 15% COC return because it doesn't meet some ridiculous forced appreciation projection, or whatever other mathematically self-stroking overly analytical criticism can be thrown at it.  

Ultimately I want to be so good at underwriting by the time I am looking for deals for myself  I can spot a good or bad deal fairly quickly at least from a mathematical standpoint.

Keep in mind the author of the hook on this that is touted on this site is a real estate professional and a Broker with an extensive network its all good in theory .. but implementing it on those size assets is a whole different ball game.its why turn key is popular u may save a bit on do it yourself or get the refi.. but finding the deal that works mathematically to get all your money back is a very big challenge in most markets given the competition.. 

Machine learning is basically, a mathematical/computer algorithm that can automatically improve itself using experience in the form of previously collected data.