The following comments have been made regarding the recent paper published by Ken Giller. Ken E. Giller, Ernst Witter, Marc Corbeels, Pablo Tittonell. 2009. Conservation agriculture and small holder farming in Africa: the heretics view. Field Crops Research 114 (1) 23-34. The debate resulted in a number of excellent comments that we would like to share through this blog. I am managing this debate by listing word for word the comments made so far. Hopefully this will be an educational and constructive debate. I have not changed or edited any comment. I encourage any one with thoughts on this subject to submit a comment by inserting it at the bottom of this list of thoughts.