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RE: dynamic vs. static typing

Paul F. Dietz wrote:
> > Without early typechecking, the proportion of type errors which
> > manifest during testing and at runtime rises significantly -
> > and often, their nature isn't as clearly identified, so they
> > take longer to track down.  Looking at this in terms of what
> > percentage they are of all possible errors is misleading at best.
> But is there any evidence to support the contention that the putative
> savings in debugging time exceeds the extra design and coding cost?

Is there any evidence to support the above implied contention that an
*extra* design and coding cost exists?  The costs (in terms of time) with DT
systems may simply be shifted to later in the development cycle.