The Piraha: a people who do not need to count.
Yesterday, for instance, I got distracted by a site on babies with beards (which I worked out later when describing it to Hodmandod Senior was probably a hoax - but very funny too);
Then today I read this via The Edge - a New Yorker article about a people in a remote part of Brazil who seem to be defying Chomsky's ideas on language development. They have no words for number because they have no need for them. There is no 'tree' of subphrases or divisions either. They also have no art or abstract means of representation. Everything is concrete and direct. If they can't see it, they ignore it, and they are not interested in anything that comes from outside their world.
But enough self-indulgent procrastination - back to the shed.