>>>Go write an auto-pilot system for a 400-seat airliner.
>
>Would it be easier to write one for a 200 seater?

No. But the ramifications of a design flaw would be less. We both picked arbitrary points in the spectrum Towards the one end is the single catastrophic failure resulting in hundreds of deaths; at the other a fixable mild frustation when, say, submitting a web form.

Because of the nature of the tools generally discussed here I'd hazard that the closest that clients of most UT posters come to a risk of physical injury is being hit by a print head - or possibly an over-enthusiastic cash drawer :-}