in ancient rome the IV in roman numerals is usually replaced by IIII such as in clocks

Actually, the conventional story that ancient Romans used IIII instead of IV in Roman numerals, particularly on clocks, is not accurate. Here's a clarification:

1. Use of IV: Ancient Romans frequently used IV to represent the number 4. This is evident in numerous inscriptions, artifacts, and documents from various periods of Roman history.

2. Clocks: The idea that IIII was used on clocks to represent 4 is a misconception that has persisted for centuries. In reality, most antique Roman-style sundials and timepieces that display Roman numerals do use IV.

3. Common Misconception: The belief that IIII was used instead of IV on ancient Roman clocks likely originated from a misinterpretation or a desire to explain why modern clocks use IIII instead of IV. However, this reasoning is flawed.

4. Practicality and Tradition: The IV symbol is more practical and concise than IIII. Ancient Romans appreciated brevity and efficiency in their numeral system, just as they did in their language and writing.

5. Ancient Inscriptions: Many ancient inscriptions, including those on buildings, monuments, and coins, use IV for 4. Examples include the Column of Antoninus Pius and the Geminus astronomical tables.

6. Contradictions: The assertion that IIII was used instead of IV on Roman clocks contradicts a wealth of historical evidence showing IV being used consistently in various contexts.

In summary, the notion that ancient Romans replaced IV with IIII in Roman numerals is a common misconception. In reality, both IV and IIII were used occasionally, but IV was generally preferred for its simplicity and efficiency. This preference is evident in numerous inscriptions, artifacts, and documents from ancient Rome. The idea that IIII was used instead of IV on clocks is not supported by historical evidence and is likely a misinterpretation that has persisted over time.