The thing that gives me pause is that this "open letter" is a web form that anyone can "sign" with any name they choose. Also, some of these have little or no b

The thing that gives me pause is that this "open letter" is a web form that anyone can "sign" with any name they choose. Also, some of these have little or no background in AI (Bengio and Hopfield being obvious exceptions). From what I've read, Yann LeCun himself allegedly "signed" the letter. His name was removed from the list after he issued a public statement denying he'd signed, and in fact actually disagreed with it.