robot -grandpa's hammer. What a flawed analogy. But just to stick to it, if you are building a house, use carpenters wielding your grandpa's hammer to drive in

robot -grandpa's hammer. What a flawed analogy. But just to stick to it, if you are building a house, use carpenters wielding your grandpa's hammer to drive in the nails. if you need to explore Mars, your illiterate hammer wielding carpenters won't help and you might want that robot and expensive scientists after all. The whole metaphor is flawed anyway. You argue by metaphorical extremes. Even within the metaphor (this is a wrong way to argue a point), there are plenty of intermediate positions between Grandpa's crusty hammer and terminator style robots. Would you use a power drill and bulldozers or would you use shovels and hammers? (or cudgels and stone tablets? See? Metaphors can be twisted to argue any view point, even diametrically oppoiste ones. Arguing by metaphor is a logical fallacy (Equivocation iirc) It breaks down very fast and has no legs.