Episode: 1 31 Years Before the Wheel Episode: 2 21007 Years Before Soccer Episode: 3 22405 Years Before Bottled Water Episode: 4 23506 Years Before Rocket Science Episode: 5 2 Years Before Bow and Arrows Episode: 6 25009 Years Before Music Episode: 7 28314 Years Before Commercials Episode: 8 26103 Years Before Fitness Episode: 9 23111 Years Before Love Episode: 10 29412 Years Before Dual Flush Toilets Episode: 11 64 Years Before the Soup Plate Episode: 12 28416 Years Before the Family Doctor Episode: 13 ? Years Before Common Sense Episode: 14 20614 Years Before Cheap Junk Episode: 15 21415 Years Before Neighbourhood Episode: 16 188116 Years Before the Barber Shop Episode: 17 20517 Years Before Democracy Episode: 18 23819 Years Before Diving Episode: 19 20 Years Before Dance Episode: 20 20321 Before Traffic Episode: 21 26103 Years Before the Greenhouse Effect Episode: 22 21023 Years Before the Aeroplane Episode: 23 27326 Years Before Crossing Rivers Episode: 24 22228 Years Before Music Videos Episode: 25 247729 Years Before a Good Night's Sleep Episode: 26 24130 Years Before Superstition