Despite technology constantly improving, there's one eternal truth in computing: your computer can and will crash, probably at the most inconvenient point. But why is that? And why is it still a problem?

In this video, Dr Steve Bagley explains how computer crashes come to happen, using an Atari Falcon—really!—as a simple example. But he goes on to explain why crashes aren't just limited to ageing hardware, and how they can even be caused by cosmic rays. Maybe, sadly, they're something we'll just have to face for the foreseeable future. [YouTube]