He had much more common knowledge about life compared to the primitives, yet it was still far from sufficient.
He didn't know whether hardwood spear tips were better or worse than flint spear tips.
He always thought the javelin tips weren't sharp enough, making it difficult to pierce through a beast's body when thrown by hand.
He needed to make the javelins heavier and stand at a closer distance to throw them with lethal force.
However, such close range was prone to accidents.
He hoped the quality of the bow could be further improved, but to achieve that would certainly require metal tools.
He couldn't find any metal.
He didn't recognize any metal ores at all.
Except for some that were too conspicuous, with metal particles embedded on the surface of the stone, he could recognize them as long as he wasn't blind.
His thought was that copper ore might be blue-green stones, and iron ore might be yellow-brown stones, because these two metals rust in the air.
