Comment Re:wow... (Score 5, Insightful) 558
It's not about where the information comes from, it's about ensuring the defendant's right to examine the evidence against him. This is a critical part of due process, and if a juror brings outside information into the courtroom and bases their decision on it, the defendant will never have the chance to examine that information and respond to it.
Now, before you say, "But in this case, all the juror wanted was a definition of a word!", let me propose a hypothetical situation for you. Imagine that you are on trial for rape, and one of the jurors prints out the Wikipedia article on rape. It just so happens that the revision they've printed out contains an edit by some wacko that says "Any time a person has sex and then regrets it later, then the other person raped them." Now you have a juror circulating that bogus definition of rape around the other jurors, and you never get to know about it, so you never have the chance to tell the jury, "Whoa whoa, that isn't a legally accurate statement, and here's why." If the jurors had been forced to request such information from the judge, then even if the judge was stupid enough to print out a wikipedia article to define rape (which (s)he wouldn't), at least the defendant would know about it and could challenge it or bring it up to the jury.