Proverbmonday:
Original: "4 Augen sehen mehr als 2"
Translation: "4 eyes can see more than 2."
This means: Even though you might trust a person it might be better to control the process. This kind of processes you can find very often in security jobs: they won't let one person go, they always are at least two of them. Sometimes it's also better for searching purposes: one person might not find everything that's needed so an extra searching person may be helpful.
More info here:
http://forum.fotothing.com/topic/1232/
BTW, this is the original image:
http://www.fotothing.com/uwp/photo/7c4636f26d329fd69d181e15e081af2c/