Amazons Kindle electronic book magazine and newspaperreader has been more succes

Amazons Kindle electronic book magazine and newspaperreader has been more successful than its competitors. The factthat the Kindle reader was first introduced on the Oprah Show andwas strongly endorsed by the host Oprah Winfrey may havecontributed to its success. However the original Kindle readerhas some physical problems such as button replacement andpage-turn speed. Correcting these problems resulted in a redesignedKindle reader which was released in 2009 and received manypositive reviews. What observation research might have been used inthe redesign of the original Kindle reader?