The Ball of wool symbolises our Earth consisting of wide variety of languages that are interwoven together forming one big ball. In this ball, every wool-thread has it's important place and removing one influences a lot position of the others. It's the same with languages and related cultures, which influence each other in very different ways. Moreover, removing threads makes the ball smaller, just like disappearing languages diminish the wealth of our Earth – especially that intangible treasure that is hidden in great variety of cultures our Earth possess.
Knitting needle is there to ilustrate the ax of rotation of Earth. And the „yes“ in different languages tries to emphasize the title of poster „languages matter“.