I agree that the library should make sure that there's up-to-date information around for this. However, surely one of the purposes of doing library research for

I agree that the library should make sure that there's up-to-date information around for this. However, surely one of the purposes of doing library research for school would be to teach to take things like "when this book was published" into account. For a bright student (older age groups especially) it might even proivde an opportunity to remark on how old theories get updated when there's new information available. Sending probes serves a purpose.