What Are the Main Limitations of a Traditional Manual Smart Contract Audit?

The primary limitation is that a manual audit is inherently reliant on the human auditor's skill and time, meaning it can only find bugs that the auditor thinks to look for or that automated tools flag. It cannot mathematically prove the absence of all bugs.

Complex or subtle logic flaws might be missed, especially in contracts with numerous lines of code or intricate financial state transitions. It provides a strong security check but not a complete guarantee.