 I think one of the big things to keep in mind about metadata is that it's important to use standard encoding. That will allow for that metadata to be captured, to be preserved, to be reused and made interoperable so that it can be easily moved between systems. So we talk about, say a researcher has this homegrown system that they have their data in and at some point they want to move that to something else. It's going to be very hard to do that when the data won't necessarily match up between the systems. This is a common problem with migrating from any platform to a newer platform. Having a standard approach to how you encode that information. One that is accepted and understood by other practitioners in that area can help enable the reuse and the movement of that metadata over time. Also, it's important to keep in mind that metadata itself is data. Say an audio file that's capturing some aspect of your research. If you don't preserve the metadata that describes what that audio file is over time, it might be hard 10, 20 years down the road to understand what that object is if a researcher comes across it or to identify what that is. So we need to take good practices with how we store our metadata as well. I see this all the time. I get disks like this that I will plug into my machine and my machine won't know what format a file is on there. It won't be able to recognize it. I can run it through a format registry that documents like thousands of formats and it still might not recognize that format. And it's just because it's obsolete or it was very specialized at the time and not many people used it and so it's a complete mystery now what file that is, what kind of file it is, and what software it takes to render it. So preservation metadata can help document certain things about the digital objects that were created, about the data that was created, about how it was managed, about the tools used to create it and render it that you want to keep attached to that object over time so that you have a better chance of rendering it later.