I think the ballpoint pen is a good design because it is very reliable and useful . It also has a fairly simple design so that it can be inexpensive. The way it's put together and the materials used are important because the quick-drying ink makes the pen ideal for everyday use. It is small and light enough to carry around to use for any specific need. I think glass ketchup bottles are a poor design. They are shaped fine to hold the contents but the smaller neck of the bottle restricts and blocks the ketchup. Also, the designer did not pay enough attention to the properties of the contents and the needs of the user. There is no easy way to remove the ketchup from the bottle, which is the entire purpose.