Inattentional blindness - external link

This page links to a classic study by Simons and Chabris (1999). Follow the instructions below very closely.

Your task is to count the number of times the team in the white shirts passes the ball. It is important that you count every pass. Once you have watched the video through once wait a moment before reading the text below... Right, now watch the video again, this time do not pay particular attention to the white team. Do you notice anything unusual that you hadn't seen before?