Sam Williams

The Wal-Mart supremacy

The giant retailer's introduction of RFID technology is forcing other supermarket chains to catch up. But fiddling with data may not be the best survival strategy in the Wal-Mart future.


When machines breed

Evolvable hardware -- gadgets that design themselves -- can get the job done, even if humans have no idea how they do it.


Everyone is an editor

In the wacky wiki world, a Web browser is all you need to start contributing. But when the goal is to create an encyclopedia, such democracy has some pitfalls.


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