E-D:Übersetzung

Auf dieser Seite (http://science.kukuchew.com/tag/joke/) habe ich diesen 
Witz gefunden:

Do you know why they’re now using lawyers instead of rats for scientific 
experiments? Because:

       1. There are many more lawyers than there are rats;
       2. There is no danger of forming any attachment to the lawyers;
       3. There are certain things that even rats won’t do.

Wie muß 2. übersetzt werden?