From the blog.

Managing Digital Racket
The more I tune out, the less I miss it. But that has presented me with some complex choices for a nuanced approach to curb
Complexity – My Friend, My Enemy
Over my years of network engineering, I've learned that the fewer features you can implement while still achieving a business goal, the better. Why? Fewer $99 Graded Mock Lab January 2008 Special

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IE is running another $99 graded mock lab special through the end of January 2008.  The regular price is $249.  Note that if you buy a mock lab, what you really buy are “99 tokens” that sit in your IE account.  You need 99 tokens in your account to schedule a mock lab.  The point is that you can buy the tokens now, and schedule your mock lab later.  You don’t have to do the mock lab in January just because that’s when the special is running.