First I find the Ethological halter on the deceptive cover, as it is expected to work on foot "ethology" which is not exactly the case. this book describes different ways of working with a walk along the reins, long reins, but do not really tell us the codes to be set up to work with his horse towards freedom. It does not speak of different energy scales and explained some codes are different from those learned in a course Some exercises are not sufficiently detailed in the methods.
There still has good points, it depends on what we want. The book does not give the keys to the ethological work, freedom, but sums up the work to be walking with a horse.