What did the telescope say to the microscope?

This delightful science joke gets its chuckle from personification and a clever play on words. We're amused imagining a telescope (Deals) and a microscope having a chat, but the real humor hinges on the word "focus." Both instruments, despite their wildly different scales, literally "focus" light to bring images into view. They also metaphorically "focus" our attention, just from vastly different "perspectives."