The arguments against DSM 5 are really quite simple and straightforward—and to me seem absolutely compelling. DSM 5 has failed to allow an open, independent and rigorous scientific review of the evidence supporting its suggestions. It is the result of a secretive and closed process that has lost touch with clinical reality. Its suggestions for new diagnoses and for reducing thresholds on old ones will promote a radical explosion in the rates of psychiatric diagnosis that will worsen our country's already excessive use of medication. Finally, the DSM 5 preoccupation with diagnosing people who are not really ill will result in a misallocation of resources that disadvantages those most clearly in need them.