The phrase "stone age" refers to a period in ancient history when people primarily used stone tools and weapons. It was a time before the discovery of metals like iron or bronze. Full definition
Neither can it be seen in animals, nor deducted from the observations of stone age populations. (politics.stackexchange.com)
Looking at organized religion objectively, they are myths from stone age societies that were trying to explain the world, and there is virtually no chance any one is truth. (religion.blogs.cnn.com)
To answer the above question, all babies are different and there is no set - in - stone age for when to introduce finger foods. (wholesomebabyfood.momtastic.com)