however, it is far from being a dry read, and once i got into the rhythm of morris' writing style i really enjoyed myself. therefore, it took 9 one-hour bars before the lowest low was reached. trails are divided into 3 sections. the other error is model error. change the filter often to save time and money. however, this will vary depending on many factors. during this phase students will work side-by-side with 3 separate trainers for 25 hours each (total of 75 hours). for example, what emotions did the assignment stir up in you? 