"The philosophy of our Jiu-Jitsu is to keep the mind always open and to practice all sorts of systems in order to get the essence of it. Anyone who focuses only on one star is in danger of missing the entire universe."
Master Horst Lindenau 2013

This picture shows two fighter demonstrating the system "Atemi Combat". A radical and direct self defense technique. Atemi was taught in the  WCA (world Combat Association), where Master Horst Lindenau used to be a member for two years and was graduated as a second Dan in Atemi Combat.

It's for sure useful and good to become a 1. Dan in a specific system first, to have a solid base for further studies. But after that do not hesitate to learn as much as you can from other systems too.

Photo: Atemi Combat Master Enno Voigt and Frank Burdorf (Germany) show an arm lock. Both Masters have started their Martial Arts career with Master Horst. Frank was the very first student trained to Master degree by Master Horst.