From "The Dyer of Lorbannery":
papThe Dyer of Lorbannery: There comes a point in writing, and it's a spear-point, it's very small and sharp but because it's backed by the length and weight of a whole spear and a whole strong person pushing it, it's a point that goes in a long way. Spearpoints need all that behind them, or they don't pack their punch in the same way. Examples are difficult to give because spear-points by their nature require their context.... They tend to be moments of poignancy and realization. When Duncan picks the branches when passing through trees, he's just getting a disguise, but we the audience suddenly understand how Birnam Wood shall come to Dunsinane....
[T]he [spear] I used as a title for this -- in The Farthest Shore, a minor character shouts out her name for all to hear. For someone who read that page alone, this would be inexplicable and possibly silly. For someone who has come all the way through Earthsea as far as Lorbannery already, it's terrible and revelatory -- and when Ged does the same thing later, quoting his own name in what Orm Embar says to him, there's an even longer spear-point that goes back to Ged's naming at Ogion's hands near the beginning of A Wizard of Earthsea...