Dipping my toe into off-topic for a bit: Wikipedias "sources" can range from very accurate and on-topic to complete garbage. They certainly train you to filter

Dipping my toe into off-topic for a bit: Wikipedias "sources" can range from very accurate and on-topic to complete garbage. They certainly train you to filter out the good from the bad, as well as to consider whether the paper is even relevant to the statement it's being cited for.