News flash! Ice causes falls!
Especially when it's a 2" thick floor of ice under 4" of fresh snow... My town is great about plowing, however, they plow into huge piles, blocking the drainage when the sun is out long enough to melt the damn stuff. Therefore, I have Lake Quin in my street gutter and spilled onto my sidewalk (I live at the top of a 6% grade hill), making for beautiful skating... I simply decided to do said skating sans skates, falling up hill, flat on my face.
It cost me a cup of coffee, the scuffed toes of my cowboy boots, and my pride. Always looking for a positive, the coffee melted a patch big enough for me to gain my balance, and move onto the sidewalk to the house.