Obscure Code

A man visits his scientist friend and sees her piling a bunch of boxes on top of each other. They have labels such as, "Dependency", "Dep 2", "Dep 3", "Dep 4", "Obscure library", "Old code", "Code". He asks, "What are you doing?" She replies, "My research problem is so obscure and tricky that the only code for it is decades old."