Warren BuffettI diversify stuff that I find unpredictable or do not know well enough.  

But they became 'off their meds' unpredictable & the newer tenants felt unsafe, so were given 30 days.

The U.S. justice system is unpredictable.

I could buy five of them on the South Shore for the same price.Trend data should also be available through your MLS and/or your local Realtor board.What will happen in the future of any real estate market is unpredictable - but the best predictor of future behavior is past behavior.  

All of those unpredictable variables would have to go into an analysis that stretches out that far and no one will get that right--rendering the numbers useless. 

Equities market is unpredictable to a high degree.

I've only been looking at fixed interest rates.Account Closed (*squeals at the fact that you commented*) Yeah, and even more unpredictable with +100 year old houses.

I don't hire tenants to do work on the property because of many unpredictable things could come from it.(1) Who owns the result of the work? 

At rare and unpredictable intervals, however, credit vanishes and debt becomes financially fatal.

The US legal system is too unpredictable and slow.