Is this guy confused about threads in node.js?

http://letsnode.com/example-of-what-node-is-really-good-at

Recaping, he says that traditional thread programming incurs in performance 
penalties because of cost of context switching and thread creation. 

AFAIK, it's true that node.js is hiding threads from end developer, but 
it's still using them internally. For example an HTTP call to a website 
uses a thread. Node.js is not magic, otherwise how can it execute  portion 
of code asynchronously without using any threads?

Am I wrong?


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