Continuity mistake: Frank and Henry are up late, 3am, and, talking about how his late wife Mary never wanted to see her youngest go into the Family Business. Henry says how proud Mary was in the day of Jamie's graduation. But Mary was already dead by the pilot, when Jamie graduated.
Parenthood - S2-E14
Continuity mistake: Frank reaches for his cup of coffee twice and moves his foil-wrapped breakfast sandwich from sitting on top of a stack of blue folders on top of a newspaper. However, in the next scene, Frank reaches for the sandwich, and it is back on the stack of blue folders. (00:10:07)
Answer: It's a common cop show plot device. If the police on the show always acted in the most logical way (i.e. not alerting a suspect to their presence) the show wouldn't have the opportunity for an exciting foot chase.