When I read the title I was expecting an article about the impracticality of the Ketchup bottle design itself. For something that is so widely used, I've never been able to understand the impractical design of ketchup bottle. For such a viscous fluid, bottle design in highly inefficient and bothersome, so much so that the wikipedia page of ketchup itself, addresses the issue [1]. Admittedly, with the prolific use of squeeze bottles and sachets, the issue has been sidelined, I guess its just one of those things that have no rhyme or reason.