Helix

The word "Helix" keeps poping up from my head these days after I first saw it from mkow's reply to one of the blogs. I found this magical word is actually pretty interesting. Imagine the helix on a screw and you were tiny enough to walk on it. Due to the gravity, you can't go backwards but keep going down on this unpredictable journey. You may be scared by the scenaries behind the corner but you should be brave enough to overcome all the bumpies otherwise you will get screwed!
It doesn't matter you are walking on a long, short, rotten, or stainless screw, as long as you finished your journey at its sharpest point.