I agree that most likely Dean doesn't recall anything or is lying about that. And yet the timeline for establishing the location of the KTV driver was critical and was never nailed down properly, and the police seemed to completely depend on evidence from an interested party (the KTV employer, driver colleagues and customers) because the police and the media had 'their man' already. This leaves room for doubt where it would have been better if none existed.
Its funny to see people say I have no proof that the KTV customers were drunk and yet it is case closed for Dean.
The point here is how do we know the customers were drinking or not? Isn't it most likely that they were drinking? Did nobody ask these questions, why not? How did they recall accurately what time they left the KTV and saw the driver? And I still haven't seen where the KTV video tape timeline was nailed down with other evidence such as phone calls on tape?
This stuff matters because if the timeline is off by just a few minutes the whole case against Dean falls apart. It becomes one persons word against another. The way the system works in Taiwan is that you must convict somebody so the victims family can receive compensation, there is huge pressure on the courts to convict in a case such as this.
It's getting boring restating arguments, I agree that Dean is the most likely culprit being rip roaring drunk and unable to recall anything, but the process and assumptions involved leave a lot to be desired and doubt still remains, it's the difference between being 70% certain and 99% certain. It leaves room for a miscarriage of justice to occur where no room should be left.