Sometimes, though, being careful is insufficient to keep freak things from happening.
Yesterday morning I walked to my car to bring a few things inside. As I walked back up the stairs in front of my house, I noticed that the scarecrow in our yard (Halloween/Thanksgiving decoration) had fallen all over in the night. Picture this except face down:

I reached over to tip the scarecrow back upright, but as I did so I lost my footing on the steps. As I fell the cupping motion I was making with my left hand to pick up the scarecrow turned into the instinctive "hands-down" motion to break my fall. Of the infinite number of trajectories my left hand could have taken toward the ground it apparently lined up almost perfectly with the top of the scarecrow, which was concealing the sharp end of the bamboo shaft that went through the whole scarecrow.
When I say the scarecrow and my hand lined up "almost" perfectly, I mean that the top of the scarecrow entered the middle of my left palm at a large enough angle to leave a laceration about three inches long and about as deep as you can go without coming out the other side. As I hit the ground on my right side I immediately knew that my left hand was hurt, and as I inspected it my fear was confirmed with LOTS of blood coming from that direction. I went inside and got the bleeding stopped with a bandage and then drove to the hospital and got it stitched up. As I sit here now I am surprised at how well my left hand works with a large bandage and several stitches going down the middle of my palm. Fortunately, no tendons, nerves or other important hand parts were damaged and no debris was lodged in the wound.
A commemorative haiku:
Scarecrow with no brain
Reminded me to use mine
And walk fields with care