Question: "Who warns members to "avoid independent thinking"?"  Context: "Doctrines of Jehovah's Witnesses are established by the Governing Body. The religion does not tolerate dissent over doctrines and practices; members who openly disagree with the religion's teachings are expelled and shunned. Witness publications strongly discourage followers from questioning doctrine and counsel received from the Governing Body, reasoning that it is to be trusted as part of "God's organization". It also warns members to "avoid independent thinking", claiming such thinking "was introduced by Satan the Devil" and would "cause division". Those who openly disagree with official teachings are condemned as "apostates" who are "mentally diseased"."  Answer:
the Governing Body