Comment Re:Animals have been making tools forever (Score 1) 61
Tools aren't just for food, every animal that builds a nest is a tool maker.
Hmm... To agree with that we would need to eliminate things done from instinct rather than conscience thought. A dog turning in circles to prepare a sleeping area probably doesn't rise to the level of tool use. Hitting a bone with a rock to get to the marrow probably isn't tool use. Keeping one particular rock that fits your hand shape to save you time searching for a nearby suitable one moves into the gray zone of tool use. Tying a rock to a stick to get more impact force is definitely a tool.
If I find an unusually strong stick that I use to hit berry bushes so only the ripe fruit falls off, is that a tool? I didn't shape or modify it, but I did use it in a non-traditional way to achieve a specific result. Separating instinct, handy resources, and planned outcome optimization can get murky.
When trying to break something, any heavy object becomes a "hammer".