Wikipedia is created by users. The validity of the answers depends on who entered the answer, what references they used and how much they really know. Any good researcher will tell you never to trust what is there, but to always check it against valid sources.
It is a great place to start research from.
I would trust most of it as "probably true", but don't take everything you read there are serious fact, as the user who wrote/edited the article might not of known what he/she was talking about. In other words sometimes it's true and sometimes it's not.
nothing on wikipedia is true
No
That the information presented on Wikipedia may not be completely true and accurate. In addition to this the answer's on Wikipedia cannot be verified.
true
Sadly not all of Wikipedia is true. Wikipedia is an online user generated encyclopedia which can be edited by anyone. Some of the people editing have no idea what they are talking about leading to incorrect content. While there are many people on Wikipedia that try to correct these mistakes, they cannot catch all of them.
no it is not always true
They are true and not true because in wikipedia it says that some old wives tales are false and some are true
according to Wikipedia: True Blue by John Williamson
Tautologies are always true.
Wikipedia is a public domain where anyone can post on their pages. Not everything on Wikipedia is true, but people do search the the pages and try to make it as real , and dependable as possible.
Seriously... why? Are you that lazy that you can't just go read about rapid application development on wikipedia?
no, it is not because sometimes it doesn't give you correct information i wouldn't always trust wikipedia