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Re: dynamic vs. static typing

Anton van Straaten 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?