The dangerous part is that theory doesn't always match the real world, and human beings are inherently flawed. 

Is it dangerous or profitable to treat real estate as a game of chess? 

In that case, investors usually negotiate the list side in advance.But for the agent, that's a dangerous game.

Most people would yell at the lady, honk, their heart rate would increase, they would be pissed off at the danger that lady put them in.

“A lot of firms have been sitting on their hands and not putting money to work, and that’s dangerous,” said Christian Dalzell, managing partner at real-estate investment firm Dalzell Capital Partners LLC and a former managing director at Starwood Capital Group.MORE FROM WSJHow the National Enquirer Got Bezos’ Texts: It Paid $200,000 to His Lover’s BrotherHow Sears Lost the American ShopperAt USC, Admissions Cheating Scandal Runs DeeperWho’s Running in the 2020 Election?

Dangerous to have all your eggs in one basket.

Old light fixtures and the switch on the ventilation fan is chewed by my parrots which could be dangerous.

One current tenant is OK, the other is non-paying and extremely unstable/dangerous.  

It wasn't until Dubya, via his regulators pushed them in (thanks to the public/private partnership BS) to it in late 2006:Between 2004 and 2006, when subprime lending was exploding, Fannie and Freddie went from holding a high of 48 percent of the subprime loans that were sold into the secondary market to holding about 24 percentDuring those same explosive three years, private investment banks — not Fannie and Freddie — dominated the mortgage loans that were packaged and sold into the secondary mortgage market.

I think the Passyunk Square area is a strong middle class neighborhood that is starting to see an explosive restaurant scene which will draw plenty of renters.