Thank you for comming I am Sendi Metz I am a programmer for 35 years and woman of certain age. I really am. I wrote a book couple of years ago. when it came out it was bomb and open my life and I had to quit my day job I need to make up my living and people kept asking me teach teach all object oriented design classes. and then I had to make curriculum. boy that was hard, curriculum is tough. and so I sat down. figure out I thought were what is the most important set of lesson I could teach in three really intense days. and when I did that, when I made cirriculum I thought that they were all unrelated. They were completely unrelated lessons. good things but not the same thing. and I have been teaching that course last year and half and I found realized after since my job think about code. What a wonderful thing,