I’ll take the opportunity to expand. Say you observe an event directly, with your own eyes. We’ll exclude optical illusions, hallucinations, or the possibility

I’ll take the opportunity to expand. Say you observe an event directly, with your own eyes. We’ll exclude optical illusions, hallucinations, or the possibility of a demon manipulating your brain in a vat. Is your direct observation a fact? It’s an important observation, so you must communicate it to others. You perform a speech act to tell a few colleagues, with utterances and gesticulations to describe your observation as closely as possible. Is your oral exposition a fact? You must communicate the observation widely for the good of society. You write a Tweet thread, and publish a scientific paper to the journals. Are these written productions also facts? It’s retweeted, and a summary of the preprint is published to nature.com. Facts? Colloquially, most people would refer to all of these things as facts. And each one is a carefully constructed human artifact, whether it’s sensory data imported and stored in your brain, a speech utterance, a Tweet, or a scientific article.