Laurie Bauer - Prepare to be Dizzified

When is a word really a word? When it's in the dictionary? How does it get there? Laurie Bauer, Professor of Linguistics at Victoria University, says dictionaries are out of date the moment they are published as new words arise all the time. What's a Scrabble player supposed to do? Prepared to be dizzified as Laurie tells Chris about corpora - collections of hundreds of millions of words.