How is it a postmodern literature?

The list of 61 essential postmodern reads gives points for: • author is a character • self-contradicting plot • disrupts/plays with form • comments on its own bookishness • plays with language • includes fictional artifacts such as letters • blurs reality and fiction • includes historical falsehoods • overtly references other fictional works • more than 1000/less than 200 pages • postmodern progenitor. Nice, but where is Special Topics in Calamity Physics? (via)