There is proof he WAS German: Exceptionally smart with scientific talent and precision skills...:)
Nah, Germans were good engineers so they were good at inventing things such as water closet (toilet) and diesel engine. They tinkered with parts together as long as it was necessary for the parts to fall into some coherent configuration
Poles are more analytical and poetic - they do not care about practical application of knowledge. Hence Copernicus looketh at the sky and thinks to himself (sources are not clear whether he was drunk at the time, like every Pole normally is):O kurwa! Look at that sshit, it doesn't move! We are moving!
I'll write a book about it but I gotta do some math first cuz I betcha the simple minded Krauts won't buy it without it, some drawings and pretty pictures.
And thus Copernicus wrote De revolutionibus orbium coelestium, which includes pretty pictures, especially for Germans. He wrote the book in Latin to make sure Germans still had to do some work before they could understand what he wrote, and the pruropse of the pretty pictures was dual - to explain and to encourage the learning of Latin.
Copernicus also displayed typically Polish humor. That in itself excludes any possibility of him being Germans as Germans do not have a concept of humor. Copernicus screwed with the Church in more ways than just pisssing on their cosomology. He made it impossible to burn him at the stake. He conveniently died in the same year as his book was published. Everybody was really ticked off.
Just imagine the pope's and the holly inquisition's disappointment with their inability to punish the ultimate rebel - a Pole by the name of Mikolaj Kopernik aka Copernicus.
Now tell me, how much more Polish can one be? huh?