This demonstration of a finger-safe table saw is jaw-dropping. Totally legit. The blade detects the electrical currents in your finger, and drops from the table near-instantaneously, thus saving you from a life of misery. Coolest thing I've seen in a while.
Of course, if you read the article you'll see that the tool industry really lived up to its name: they refused to adopt the technology until the government got involved. What a bunch of dickbags. As if people wouldn't pay more for a saw that removes the #1 source of danger involved. I wonder how many fingers have been detached from hands since the product's initial demonstration in 2000. (Probably enough to feed all the Sox fans at Fenway this weekend!)