Keyboard Layout: Dvorak vs Colemak: is it Worthwhile to Improve the Dvorak Layout?

[Yang Ha Nguyen]

On Jun 13, 11:30 am, Tim Roberts <t... at probo.com> wrote:
> Xah Lee <xah... at gmail.com> wrote:
>
> >(a lil weekend distraction from comp lang!)
>
> >in recent years, there came this Colemak layout. The guy who created
> >it, Colemak, has a site, and aggressively market his layout. It's in
> >linuxes distro by default, and has become somewhat popular.
> >...
> >If your typing doesn't come anywhere close to a data-entry clerk, then
> >any layout “more efficient” than Dvorak is practically meaningless.
>
> More than that, any layout "more efficient" than QWERTY is practically
> meaningless.  The whole "intentional inefficiency" thing in the design of
> the QWERTY layout is an urban legend.  Once your fingers have the mapping
> memorized, the actual order is irrelevent.  Studies have shown that even a
> strictly alphabetical layout works perfectly well, once the typist is
> acclimated.
> --
> Tim Roberts, t... at probo.com
> Providenza & Boekelheide, Inc.

Could you show which studies?  Do they do research just about habit or
other elements (e.g. movement rates, comfortablility, ...) as well?
Have they ever heard of RSI because of repetitive movements?