* Newspapers have a practical use beyond just providing news: The phrase "swat flies with it" highlights the fact that newspapers can be used for everyday tasks, like swatting insects.
* Radios lack this versatility: Radios, while providing news and entertainment, are primarily for listening and can't be used for other tasks.
* The saying is a bit tongue-in-cheek: It's a lighthearted way of pointing out that newspapers are more tangible and versatile than radio, which was a newer technology at the time this phrase was probably coined.
Essentially, the saying implies that while radio might be a convenient way to receive news, newspapers still have their place in the world due to their practicality.
It's important to note that this saying is outdated and doesn't reflect the modern world. With the rise of digital media and the decline of print newspapers, the practical uses of newspapers are less relevant.