Bruce Arena and scouting

I'm watching a 30 minute show on one of the Fox Sports channels (not a premium one, I don't know the name of the channel) and Bruce Arena just said that he scouted the first two US opponents (Italy and the Czech Republic) but that he didn't bother having anyone scout their last opponent, Ghana. He also noted that his was the same system he used in 2002.

That's pretty interesting. For one, Arena said that he did the scouting personally, rather than assign it to any assistants.

Bruce Arena is unparalleled as a homegrown American coach. He's been successful in every job he's had. Heck, I was rooting for US Soccer to pick Arena as national team coach in 1995 (I think it was) rather than Steve Sampson, who was ultimately disastrous. . . so I think it's very surprising that he's not scouting Ghana.

Arena's reasoning is that Ghana will give away their strategy in the first two World Cup games, so he doesn't need to scout them. Perhaps; but what's to stop them from playing a different system? Switching tactics is definitely a possibility for a sophisticated team.

Maybe Arena is right or perhaps he's just practicing a little Machiavellian deception.