What do you do, when the player you want is being coveted by another team? You assess the cost.
When the Raiders heard that Michael Mitchell, a player they wanted in a later round, was going to be picked in the second by the Bears, they double-checked to make sure their second-round pick was ahead of Chicago.
Then you have the discussion: Would he start? Could he start?
One scout compared Mitchell to Chris Horton, the Redskins safety who was drafted in Round 7 last year. So Al Davis writes "Michael Mitchell" on the draft card and waits for his turn to pick.
Was this the right move? Only time will tell.
The Bears traded down because the two players they coveted in the second round were already gone—Brian Robiskie went to the Browns, and Mitchell to the Raiders.
Say what you want about the the pick, but in this draft, teams needed to get the players they wanted.
Coincidentally, because all the Bears choices were gone, they tried to get Cardinals wide receiver Anquan Boldin by offering their second-round pick. But clearly that didn't work out.