Program logic bugs vs input/environmental errors

[Walter Bright via Digitalmars-d]

On 10/1/2014 7:17 AM, Bruno Medeiros wrote:
> Sean, I fully agree with the points you have been making so far.
> But if Walter is fixated on thinking that all the practical uses of D will be
> critical systems, or simple (ie, single-use, non-interactive) command-line
> applications, it will be hard for him to comprehend the whole point that "simply
> aborting on error is too brittle in some cases".

Airplane avionics systems all abort on error, yet the airplanes don't fall out 
of the sky.

I've explained why and how this works many times, here it is again:

http://www.drdobbs.com/architecture-and-design/safe-systems-from-unreliable-parts/228701716