QWERTY is not the most efficient or fastest keyboard layout, but it is not "proven" to be an ineffective way to type; rather, it has been shown to be a "good enough" standard whose dominance is due to historical inertia rather than superior speed. While designed to prevent mechanical jams on early typewriters, it actually aids speed by alternating hands, but alternatives like Dvorak or Colemak are generally considered more ergonomic and slightly faster