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Extract Directly from Time Machine

Normally you use Time Machine to restore lost data in a file like this: within the Time Machine interface, you go back to the time the file was not yet messed up, and you restore it to replace the file you have now.

You can also elect to keep both, but the restored file takes the name and place of the current one. So, if you have made changes since the backup took place that you would like to keep, they are lost, or you have to mess around a bit to merge changes, rename files, and trash the unwanted one.

As an alternative, you can browse the Time Machine backup volume directly in the Finder like any normal disk, navigate through the chronological backup hierarchy, and find the file which contains the lost content.

Once you've found it, you can open it and the current version of the file side-by-side, and copy information from Time Machine's version of the file into the current one, without losing any content you put in it since the backup was made.

Submitted by
Eolake Stobblehouse


Man Wins... This Time

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If he hadn't lost the first game, world chess champion Garry Kasparov says, a false sense of security might have gotten him in trouble in last week's historic man-versus-machine chess match against a massively parallel IBM SP supercomputer. On Saturday, Kasparov won the final game to take a 4-2 match victory over Deep Blue, when the computer conceded after 43 moves and three hours and 45 minutes of play.

At a panel last week about the next fifty years of computing, the director of the Cornell University Theory Center, physicist Malvin H. Kalos, said the evenly divided match shows "we are on the cusp" of what increasingly powerful computers can do. "In the past, no computer could beat the best human chess player. Now, the computer can play as well as the best human. Within the decade, no human will be able to beat a computer." Kalos added, "Humans with the tools will do much better than humans without the tools."

Kalos directs a national supercomputing facility at Cornell that houses a more elaborate version of the IBM SP supercomputer with 512 processors. He and other computer scientists took the opportunity on ENIAC's 50th birthday last week to reflect on the past fifty years of computing innovation and to speculate on the next fifty. [ENIAC was the first general purpose electronic computer - see the URL below. -Geoff] "Fifty years ago, no one could have come anywhere close to predicting where computers are now. Just what's in my laptop in power and memory was inconceivable back then. The transistor hadn't even been invented, and to imagine millions of them on a chip just was not possible." Within fifty years, Kalos envisions adequate computing power and memory for a "personal brain clone," a computer so powerful it can simulate the human brain and learn along with its human counterpart.

The last several days have unearthed ironic quotes from the likes of IBM chairman Thomas Watson, who reportedly commented in 1943, "I think there is a world market for maybe five computers," and Digital Equipment Corporation founder Ken Olson, who in 1977 expressed his doubts, "There is no reason anyone would want a computer in their home," just as a new company, Apple Computer, began to prove him wrong.

Cornell's Theory Center uses its 512-processor supercomputer (in fact one of only a handful in the world, but that's not what Watson meant) to help solve Grand Challenge problems. These are worldwide conundrums identified by the federal government as requiring high-performance computing capabilities for solution. The system is funded primarily by Cornell, IBM, New York State, and the National Science Foundation, and is used by scientists in such areas as astrophysics, environmental science, biochemistry, and medical technology - when it's not playing chess.

Kasparov, needing only a draw to win the match, played his last game with apparent determination to trounce Deep Blue and its ability to compute more than 200 million operations a second.


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