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. 

What I enjoy about RE is that it is mathematically simple.

So just think about it, any strategy taken by them has a distinct/significant advantage, mathematically/statistically/logistically over anything that the USA can possibly achieve in the realm of sequestering/mitigating/testing 300+ million.

One of the absolute best mathematical models for building wealth.

Risk Management, tax accounting, financial reporting, financial accounting, financial analysis, financial mathematics,  macro economics, asset and debt management, business law, business strategy. 

Simply put there will NOT be any housing market collapse or crash and I can say this due to a little thing called mathematics and facts. 

Sheets for my CCIM and RESSI (Real Estate Securities and Syndication Institute).He taught us much about mathematical tools for analyses; especially calculating IRR with paper and pencil, and the HP12c was advanced stuff.He was a nice and caring gentleman.

Bachelors and Master's in Petroleum Engineering with a minor in Mechanical Engineering and a minor in Mathematics.

There are plenty of metrics I've seen people use that determine the most prudent time to sell mathematically based on cap rate, COC, ROI, IRR, etc. but the big x-factor in these calculations is future performance based on both appreciation and rent increases, which haven't been following a predictable linear pattern lately at all.