body: I am looking at a document about a criminal case, that is published [here](http://tdcj.state.tx.us/death_row/dr_info/mcfarlandgeorge.jpg). Knowing from the document it was created in 1992, I suppose the line saying 'Age at time of offense' is wrong saying 21, because DOB is 1960 and 'Date of offence' is 1991.
  
  
  I wouldn't care much if it were not a local authority document, I'd just boldly assume it was a typo. But as it's issued by Texas Department of Criminal Justice, I am concerned about my understanding of English terms, though they seem to be quite obvious to be understood correctly.
  
  
  Is a mistake like that likely to happen in serious cases like death penalty sentencing processes?
  
  
  
title: Is it a typo in an official document?