Dr's are people too and they make mistakes. Unlike the lesser Dr's who took the stand, he admitted to his.
Documented perforation of the Dura or not, TA was murdered by JW's client and in cold blood.
I have to admit I've read his report several times and never caught that error. I assumed he was referring to the overall condition of the dura and not the small area perforated by a bullet he documented in detail. I doubt any of his colleagues would have caught that typo either or if they did would have understood he was referring to the absence of disease etc. and not the entry point of a single bullet.
A typo didn't kill Travis, Jodi did and unless the jury is looking for a reason to let a murdering psychopath walk free, they won't give that detail more than a fleeting thought. They're probably just happy they don't have to wake up and deal with and see what Dr H has to see and deal with every single day of his working life. :twocents: