They are sometimes subtle and sometimes very, very loud, and they are now recognised as works of art in their own right.
I was once recognised at work.
This affect on working life was recognised as early as 1916: "Ordinarily speaking, the man who breaks his heel bone is done, so far as his industrial future is concerned".
The group campaigns for pimping and brothel-keeping to be recognised as ordinary work.
Middlemarch was immediately recognised as a work of genius, and secured Eliot's place high in the pantheon of English fiction.
That was why Dr Caroline Campbell of the National Gallery stepped in to slam an export ban on Lorenzetti's painting when it recently came on the market after being recognised as his work.
Frank's book was condemned almost unanimously when it was first published, but for decades now it has been recognised as a work that identified a cultural shift in America; that showed the country back to itself, and more clearly than most of its inhabitants cared to acknowledge.
It's more than 50 years since Terry Riley booked his place in the history of 20th-century music with the composition of In C, widely recognised as the work that gave real credibility to minimalism and empowered a whole generation of composers to follow in his footsteps.
It has universally been recognised as a work by Peter of Spain.
When you hear Xenakis's music – any piece of what we recognise as his mature work, starting with 1954's Metastasis, onwards – you're confronted with an aesthetic that seems unprecedented according to any of the frames of reference that musical works usually relate to.
