Comment Re:I am happy. (Score 1) 572
look at how sharp the blades have to be
Do they really have to be that sharp? I faintly recall that the blades on my parents' old lawnmower were pretty dull, despite being good at cutting the grass. And grass trimmers, used to cut grass where a lawnmower can't reach, are usually just using a rotating steel wire, with a circular cross-section. So I'd guess that speed is much more important than sharpness when cutting grass.