The Official NPD Feb 2011 Thread (Data in 4 hrs for 4 weeks ending Feb 26)

[Carl]

kowenicki said:

I still puzzled why a senior member of the team here, who actually helps with the numbers (I think), has a gut geeling that his own numbers are wrong?  very odd indeed.

Because the numbers are estimations that can be, and have been "wrong" on many occasions.