The most practical consequence of not preserving vintage software is that we lose the ability to read our own digital history. Films degrade, but software is worse: it depends on specific hardware, operating systems, and even the quirks of a compiler. Once those vanish, the software isn't just unwatchable—it's unrunable. That's not abstract nostalgia. It's data loss. Old medical records, scientific simulations, or government systems were often built on these platforms, and preserving the software means preserving access to that data. Film preservation exists because we decided moving images were culturally significant. Software is that same moving image, except it's interactive; it encodes a way of thinking, a user experience, a set of constraints from a particular era. Calling it junk ignores how much of modern life was shaped by these tools. We don't save everything, but we should save enough to understand where we came from.

When NASA restored the Apollo 11 guidance code from scanned printouts, it wasn't nostalgia—it was recovering engineering knowledge that survives nowhere else. That code taught a generation how to build real-time systems, and losing it would mean losing the logic behind decisions we still rely on. Old software is like a film negative: it holds the original context, constraints, and creative choices. Saying software is just outdated tools misses that tools shape how we think. Spreadsheets, command lines, early games—each encoded a way of working we now take for granted. We don't save everything, but we save what explains where we came from. That's exactly the standard film preservation uses.

Why do we treat a film reel as culture but a program that millions used to create, work, and play as mere junk? The difference is only in how we perceive them, not in what they carry. Old software encodes decisions about design, usability, and even economics that shaped modern life. Who decides? The same way archives decide for films: by influence, uniqueness, and historical significance. We won't save every utility, but we can save the defining ones. That's not hoarding; it's refusing to let the interactive record of our recent past quietly rot away.