Binary Literacy is a term I heard from Rolf Rolles, he uses it for reverse engineering. I'm going to borrow it to give everyone a quick quiz.
I saw a young guy with the tattoo below, and I had to take a picture of it. He told me, that of all the people he worked with, I was the first to know exactly what his tattoo meant. Since he was an information technology guy, I was shocked that people don't speak binary anymore.
Question: What is this tattoo?