It doesn't just affect performance, blunt edges make skiing down icy patches impossible. The effect is so pronounced that if you do enough skiing in a day you'l

It doesn't just affect performance, blunt edges make skiing down icy patches impossible. The effect is so pronounced that if you do enough skiing in a day you'll notice a difference even at the end of that day. The effect of a newly sharpened ski is noticeable immediately even if you're an absolute beginner. Even moreso if you're on a snowboard. Source: 30 years of skiing and snowboarding.