June 19, 2011 7:37 PM

Understanding the gift of endless memory

And that's what's so baffling: these people do remember the ordinary, non-emotional events the rest of us routinely forget. Lots of sports fans can remember highlights from particularly exciting games.

Bob Petrella, a Pittsburgh Steelers fan, remembers every game.

"When was the last time the Redskins beat the Steelers?" Stahl asked.

"Let's see. They played 'em in 2004, and the Steelers won. They played 'em in 2000... ," he said.

We sat there as he scanned back through 19 seasons in 19 seconds. His final answer: Nov. 17, 1991.

We tried even further back.

"What were the last two games in October of 1979?" Stahl asked.

"Let's see. The 22nd they played Denver on Monday night. And I think they won 42 to seven," he replied. "They played, oh, then they played Dallas on October 28th, Sunday. It was on CBS, so you could get that game."

And 31 years later, he was able to describe plays.

"Staubach was scrambling, and LC Greenwood just slammed right into 'im. It was in the fourth quarter," he remembered.

He even remembered specific images from the broadcast. "I remember Staubach just sittin' on the bench. You could just tell he was out of it," he told Stahl.

When Stahl tried to trick him by asking about a game on Nov. 11, 1990, Petrella caught it immediately - the team didn't play that day.

But he did remember the day. "I was depressed. I had broken up with this woman, and I was going out to rent a couple videos. And I was thinking about her," he said.

"There's a quote that I love. It's by the great psychologist William James. He said, 'If we remembered everything, we should, on most occasions, be as ill off as if we remembered nothing,'" Cahill said.

And that's what the field of memory has always considered a given: that a healthy dose of forgetting is crucial to our ability to think.

"You abstract and generalize in part because you forget. When you have a trip to work and you have the same trip every day, you abstract and you generalize a typical trip to work because you don't remember every single detail of every single trip. So a little forgetting is needed to help you abstract and generalize," Cahill explained.

"Well, that's what I always thought until I met your five subjects today," Stahl replied.

"Do you ever get the feeling that all these memories are cluttering up your mind, that it's just too much up there, and I need to sweep this away?" Stahl asked Henner.

"It's organized, you know what I mean? It's organized, so it's called on when you need it, but it's not like they're coming in all the time," she said.

Bob Petrella added, "It's not overwhelming."

"Surprising thing is that these people don't appear to have cluttered brains. They can pull out the right information at the right time, and that's the puzzle," McGaugh said.

"It kind of takes everything we've all assumed, scientists and ordinary people and said, 'Come on guys. Rethink it,'" Stahl remarked.

"Yeah, got to do some rethinking, but that's fun. That's part of the fun part of science," he replied.



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