This book is a very important contribution to the growing body of work on postgraduate, and specifically doctoral, education ... I find the metaphor of pushing boundaries to be very appropriate, as it suggests a field of study and a range of behaviours and institutional organisational approaches to postgraduate education that are dynamic and characterised by fluidity, creativity and challenge ... Readers will gain new theoretical perspectives, ideas for improved practice, and fresh perspectives on boundaries and pressing issues that deserve to be pushed and conceptualised in new ways."