Lose what? The thing between our ears, dear reader. New brain cells die if they don't receive any inputs after they are formed. See this report in New Scientist. The experimenters used a virus to block inputs to the newly formed brain cells of a mice.
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As you know, Bob, the NSF Portfolio Review is under way.
The NSF is urgently requesting community input for the process.
There is now a sign up page for A Week of Science. Basically I'll take the feeds and load them up on Justscience.net with Feedpress the day before the 5th.
In the comments thread of the post on Turing Equivalent vs Turing Complete,
there've been a flurry of questions and comments about some stuff involving computational
Over the last two days we've talked about hash functions and their uses in cryptography and elsewhere. Remember that an ideal hash function is basically what cryptographers call a random oracle - given an input, it produces a random number in some range.