The problem I have with wikipedia is that one person writes something with a reference, and then three other people re-write it.
And in general the focus seems to be on the formality of the writing, and not necessarily on the accuracy of the information.
This is all too true. Wikipedia is a good start for information but I would never depend on it to be totally accurate even with regards to summations. It has IMHO degenerated from caring about what is accurate to what a clueless editorship views as popular.
For example the WWII article starts "World War II (WWII or WW2), also known as the Second World War (after the recent Great War), was a global war that lasted from 1939 to 1945" enough though other reliable sources date the conflict as early as 1931. Prelude to War (1942) expressly states "remember that date: Sept 18, 1931 a date you should remember as well as Dec 7, 1941. For on that date in 1931 the war we are now fighting begun." and yet efforts to get this reliable contemporary (to WWII) source with more recent works varifying it as still accurate into the WWII article were crushed.
Theses sources have been ignored in the WWII article regarding the war starting in 1931:
Cheng, Chu-chueh (2010) The Margin Without Centre: Kazuo Ishiguro Peter Lang Page 116
Ghuhl, Wernar (2007) Imperial Japan's World War Two Transaction Publishers pg 7
Polmar, Norman; Thomas B. Allen (1991) World War II: America at war, 1941-1945 ISBN-13: 978-0394585307
Spencer C. Tucker (23 December 2009). A Global Chronology of Conflict: From the Ancient World to the Modern Middle East. ABC-CLIO. p. 1850. ISBN 978-1-85109-672-5.
Mike Wright (21 January 2009). What They Didn't Teach You About World War II. Random House Digital, Inc. p. 122. ISBN 978-0-307-54916-7.
See the archive for how
reliable sources are ignored
All these publisher's sources stating that 1931 was the start of WWII have been ignored:
Enslow Publishers, - "publishes high-quality educational fiction and nonfiction books for children and young adults in grades Pre-K, and K-12."
University Press of Kentucky - nuff said
Peter Lang - "international academic publisher"
Transaction Publishers - "major independent publisher of social science books and eBooks on political science, economics, history, sociology, psychology..."
ABC-CLIO - "publisher of reference works for the study of history and social studies in academic, secondary school, and public library settings."
Special Service Division Army Services Forces with cooperation with the US Army Signal Corps by the United States Government (1942) United State Holocaust Memorial Museum (present day)
Wikipedia has become a bad joke.