True - I agree SatNav does cause brain switch off - and I have even succumbed on a couple of occasions. Having said that anyone relying on mapping software that gets a street location wrong in a town can figure it out - when the town is 70km from where the map says it is a bit of a serious issue!!
With regards to the sign pointing the correct way we have a problem in my area with kids moving the pointers for fun. Not been so bad in recent years but a few years back you pretty much had to ignore many of the road signs and use a map if you aren't sure where you needed to turn!!!
It's not about the signs nor the SatNav being wrong, it's about using the 1.4kg of grey slop between the ears.
The roads leading to a major rural centre you would assume to be hard surfaced, have a fair degree of traffic, (even at night), and for Mildura, surrounded by farmland and orchards and on the banks of a river.
By contrast, the NP where they were consists of compacted dirt roads, (no bitumen within 40-70km), hardly any traffic, (I was in the NP last month for a day and saw no other vehicles), and the landscape is waterless, low-lying scrub, gum trees...and on all four sides it has a highway they had to either turn off or cross over.
It isn't that the SatNav misplaced 30,000 people, that's irrelevant - it could just as easily been a paper map, it's that the idiots completely ignored their surroundings.
...and yes, I may have got a bit worked up over this...