You cannot fault the information given, it is in the usual style of Edward De Bono,there are reminders from previous written works also some additional information. It is very easy to read and take on board all he has to say. If your familiar with his work you will feel at home, if your new to De Bono, you would find it best to refer to previous works in the first instance other wise you will not gain all that is intended as there are sometimes only references and not all the detailed information you might require.