Stephen Schiffer is someone who likes to think about language, which is basically the way we use words and sentences to communicate with each other. He thinks really carefully about how words and sentences work, and how we can use them to express different ideas and thoughts.
You know how when you talk to your friends, you might say things like "I want pizza" or "Let's play a game"? Well, Stephen Schiffer thinks about how those sentences are put together, and how we can understand them. He also thinks about more complicated sentences, like "If it rains, we'll stay inside" or "I didn't know that I had already met her before".
Stephen Schiffer is kind of like a detective, trying to figure out how language works and why we use certain words and sentence structures in different situations. He's interested in lots of different questions, like how we know what other people mean when they talk to us, and how we can use language to persuade or influence other people.
Overall, Stephen Schiffer is a really smart guy who likes to think about language and how it shapes the way we communicate with each other. By studying language and understanding how it works, he hopes to help us all become better at expressing ourselves and understanding each other.