There was a toot that went around a few years ago that I wish I had bookmarked. It said something like, and I'm badly paraphrasing from memory, "When you consider the usability of your software, think about what it will be like for an elderly person, like Margaret Hamilton, who worked on the software for the Apollo 11 guidance computer and would be dismayed at how modern applications require megabytes just to display a button." Does anyone know the one I'm talking about and have a link?