For everyone who has an interest in the causes and contributory factors for this accident, the following article, written for Vanity Fair by William Langewiesche in 2014, is as good a summary as you will find. The interrelationships that came together that night (automation, training, human factors, culture, CRM, etc.) are all discussed – and explained well enough for a general audience to comprehend.
https://www.vanityfair.com/news/busi...ight-447-crash
There is much more to this accident than "the pitot tubes became blocked with ice", or "there was no adequate procedure at the time", or "lack of training in high altitude stall", or "awareness and implications of Alternate Law".