"When technologies are in-between human users and natural prompters, we may qualify them as first-order (Figure 13). Listing first-order technologies is simple. The ones mentioned earlier all qualify. More can easily be added, such as the plough, the wheel, or the umbrella. The axe is probably the first and oldest kind of first-order technology. Nowadays, a wood-splitting axe is still a first-order technology between you, the user, and the wood, the prompter. A saddle is between you and a horse"