Some of the "Perfect - I never make mistakes" posters seem to ignore the fact that in this case there was really only one error. The aircraft (for whatever reason) didn't turn left.
Had the crew been unaware that they were on the wrong taxiway they would certainly have stopped. But they obviously were not so aware. Although they might have spotted say a vehicle which was apparently too close, and stopped, most of us would have probably assumed that a building could not have been built within striking range and continued, given that we thought we were on the correct taxiway. At night.
The only amusing thing that comes out of a sad incident like this is seeing how many people come out of the woodwork to demonstrate how much better they are than the unfortunate crews involved.
No, I'm not making excuses by proxy: I'm just thankful that my many mistakes didn't have similar or worse outcomes.
The investigation will tell us what transpired, not these columns.