Steve slipped again in SN1023 stating that we don't understand how AI works. We know. People who don't know are equivalent of those who run away in fear from DaVinci's mechanical lion or those who viewed early cars, horseless carriages as magic. Best mechanical equivalent for AI may be a gold sluicing machinery. Math shakes and sifts wast amount of material and inevitably gold nuggets of results emerge at the end, by Physics in real world, by Math in AI. It is just giant shaker and sifter, blindly extracting what is wanted. Despite the name, there is no intelligence or reasoning within. There is nobody there saying, oh this is gold let me extract it. Don't fall into the trap of believing that, there is no ghost in the machine. By authority of 17yrs of work in AI field.