Screening revealed no prior history of domestic violence, or any serious criminal history for either.About 2 months ago I started receiving reports from one of their neighbors that the couple was arguing, and that he was acting irrationally when angry.  

Decide your MAO beforehand and dont get caught up with the irrational exuberance.

I see your point, but he is referring to irrational fear. 

I think one of the major things that people need to protect themselves from is irrational fear that causes them to do non-optimal things with their money and not take risk.

But I guess some people are superstitious and irrational.

The broker and legal assistance provided by CAR can make suggestions, but they can't stop irrational people from filing (maybe) frivolous lawsuits.

I dealt with this garbage when I repositioned my properties and I can tell you that you will be on parking cop/tenant dispute resolution duty going forward.The only way to deal with irrational children who are throwing a tantrum is to reward them with a picnic table and $50 grill.

If that information is not sufficient to support others concerns associated with pits then obviously this is a illogical circular discussion in which you may choose to put forth irrational arguments.  

Hungry people have historically proven to be violent and irrational (e.g.

I tend to like buying things that just got the crap kicked out of them because people have irrationally bid them south.