Shepherd Theory
This theory gives us evidence of Otzi being a farmer. When examining his clothing there are traces of grain, he is also carrying a goat skin cloth. He has lots of equipment on him, such as a flint knife. His last meal was deer, flour and grain. Otzi's bones also have arthritis and maple leaves were found near him.
Murder Theory
The murder theory is about Otzi being shot by an arrow. In Otzi's back there is only the arrow head. There is also evidence of Otzi having a full stomach shortly before death. He only had 2 arrows ready to be used and had a very valuable copper axe. The murderer would probably have wanted Otzi's axe.
Warrior Theory
The warrior theory is about Otzi and his village being attacked. Otzi has a deep cut on his right hand, this is probably from when Otzi was defending his village. The arrow in his back must have been shot from someone attacking the village.