I just want to be clear that I’m not say­ing that the details of the algo­rithms are irrel­e­vant. In a way they can mat­ter very much, and you know, in a cer­tain cir­cum­stance, in a cer­tain sit­u­at­ed use, it might mat­ter sig­nif­i­cant­ly what the algo­rithm does but we can’t say that a pri­ori. So we need to both open up the algo­rithms, we need to under­stand them as much as pos­si­ble, but we must not be seduced to believe that if we under­stand them there­fore we know what they do.