Like Robinson Caruso, they’re primitive as can be!
Read the book (the real book, not the Disney or Sesame Street version) some time. The Reader's Digest condensed version is very faithful to the original, though
Reader's Digest Best Loved Books for Young Readers, Volume Five (Robinson Crusoe, The Story of My Life, The Jungle Books and The Great Impersonation (Good reads all!)
Robinson Crusoe was not 'primitive' although he was marooned in a primitive environment.
Caruso? The primitive tenor? Good one. You made me smile.