 Goffman saw this book as his magnum opus , but it was not as popular as his earlier works . 
 Goffman saw this book as his magnum opus , but it <a href='negative_concord' title='1'><mark>was</mark></a> <a href='negative_concord' title='2'><mark>not</mark></a>as popular as his earlier works . 
Goffman saw this book as his magnum opus , but it ain't as popular as his earlier works .