Sillyness

Can someone please answer me and tell me who designed the side walks of Seattle? I mean come one this one of the cities in the United States that rains all the time, and yet whoever designed the side walks decided to put smooth not textured cement in certain areas of the city. They also decided it would be a good idea to put smooth bricks in the front of Seattle Central. I think this is just silliness because I slide everywhere when it rains. I can't imagine how many people have or could get injured from falling in these smooth areas of the city. I drives me crazy, because I am a fast walker and I can not walk fast in these areas because I'm scared I will slip and fall. I would just really like to know who came up with this brilliant idea and give them a piece of my mind.