it's not clear

Grammar usage guide and real-world examples

In summary, the phrase "it's not clear" is a common and grammatically correct way to express a lack of understanding or certainty. According to Ludwig, it is widely used across various contexts, including news, scientific articles, and general communication. While predominantly neutral in register, it can be adapted for more formal settings by using alternatives like "it remains uncertain". Its versatility and frequent occurrence make it an important tool for conveying ambiguity or the need for further clarification. Understanding the nuances of its usage, as highlighted by Ludwig, can improve precision and clarity in writing.