phil os fers pondered the questions for millenia. >> it's not just what it looks like. a work of art is just an appearance it's a product of someone's effort and skill and technique and orangeality, it's good to have a show like this. increasingly art is an asset. in terms of the world along side stocks and bonds. shows like this makes you look at the picture did see it for its beauty rather than the price tag. >> visitors have until the end of answer to find the picture. they'll hand side by side and punters will decide what is art. >> al jazeera's website has more news. >> undercover and now she's taking us to new york city where some of the toughest put it to the test. >> the engineer who designed the bionic eye.