Unlike stocks, where market investors may be world wide, having unlimited supply of similar alternatives with high liquidity, real estate is just the opposite. 

Is it gonna have an worldwide inpact if they fall?

When there are concerns about worldwide growth the dollar will appreciate.

But with the evidence previously provided (from a legitimate decade + long research study, with peer reviewed methods/ controls, in an academic journal, by scientists, with PhD’s and decades of respected work, cited as experts worldwide..) why aren’t we banning Golden retrievers too?

Huge world-wide STR demand for SF condo with views - it rented constantly.

So, that gives me a way to calculate the cost associated with a turnover.And, anyone who says "I'm not a gambler" and buys rental properties is kidding themselves.

Spenders are just like drunks and gamblers.

but when  I list a property it goes to over 900 web sites world wide, unless it its deemed a luxury property then a few more. 

Maybe, just maybe it is possible ... nah, never mind, we're all just a bunch of degenerate gamblers that just got really, really lucky.

The nationwide, err worldwide crash in 08, will not likely happen anytime soon.