Some of Hardy's examples seem unfortunate in retrospect. For example, he writes, "No one has yet discovered any warlike purpose to be served by the theory of numbers or relativity, and it seems unlikely that anyone will do so for many years." Since then number theory was used to crack German enigma codes and much later, figure prominently in public-key cryptography .  Shortly after, the theory of relativity contributed to the development of atomic weaponry and later was instrumental in the development of the Global Positioning System . However, Hardy's more prominent examples of elegant mathematical discoveries with no use (proofs of the infinity of primes and of the irrationality of the square root of two ) still hold up.
Magna Home Entertainment in Australia has released a 9-disc 50th Anniversary Collection, containing a total of 52 episodes [ citation needed ] . In September 2009, a Smurfette-themed collection containing 25 episodes was made available followed by the "Papa Smurf Collection" in December 2009 containing 26 themed episodes.  In July 2010, both the Smurfette and Papa Smurf Collection were included in a special 'Favourites Collection'.  Also releasing at the same time was the Smurfs very first feature film (produced in 1975), The Smurfs and the Magic Flute , available for the first time on DVD, in Australia. 
By the 1940’s, Calder dream of monumental sculpture was realized. Jean Arp suggested the term stabiles to describe the abstract monuments of bolted steel, based on ship building techniques. The stabiles have an implied, lyrical movement. They suggest primordial animal forms. Calder began to change the very concept of public sculpture. His stabiles gave poorly designed stark public spaces a humane touch. Calder began to design sculptures with site specificity in mind. As Calder’s fame increased, he painted jet airliners and racecars, but always with total honesty and integrity to his art. In the 1960’s, he became a voice for the anti–Vietnam War campaign. Throughout his long prolific career, Calder produced more than16, 000 works, at an average of one work a day for fifty years. The quality of his work was consistent, always imbued with a joy, pleasure and a child like quality. His work never became banal or sentimental. Calder died in 1976, a few weeks after a retrospective at the Whitney Museum. Calder is a giant of modern art. He used the Universe as his model and in doing so, created his own unique universe.