The Discovery Institute has also relied on several polls to indicate the acceptance of intelligent design. A 2005 Harris poll identified ten percent of adults in the United States as taking what they called the intelligent design position, that "human beings are so complex that they required a powerful force or intelligent being to help create them." (64% agreed with the creationist view that "human beings were created directly by God" and 22% believed that "human beings evolved from earlier species." 49% accepted plant and animal evolution, while 45% did not.) Although some polls commissioned by the Discovery Institute show more support, these polls have been criticized as suffering from considerable flaws, such as having a low response rate (248 out of 16,000), being conducted on behalf of an organization with an expressed interest in the outcome of the poll, and containing leading questions.