You're making the same mistake. What did they use, spears? Can't you make spears from wood and stone? I guess you must mean swords, but I feel that the subtext

You're making the same mistake. What did they use, spears? Can't you make spears from wood and stone? I guess you must mean swords, but I feel that the subtext of your comments is humble-bragging how obvious these things are to you. See my comment to your sibling comment by neuronic.