> Humans are not exposed to "billions of words" ... continuous signals Yes humans need to learn to extract words from signals, but that does not mean it's not

> Humans are not exposed to "billions of words" ... continuous signals Yes humans need to learn to extract words from signals, but that does not mean it's not correct to count the number of words they've been exposed to in their lifetime. Your comment is like saying we can't count the number of hamburgers someone has eaten, because they actually eat myofibrillar proteins, not burgers.