I doubt many people would argue with the math behind modern uuid generation functions. Those of us that have been around for a while know the problem can come

I doubt many people would argue with the math behind modern uuid generation functions. Those of us that have been around for a while know the problem can come from the implementation and the storage for the UUID. For example: Bugs in code that may generate a unique ID once and then use it multiple places. Imaged OS installations that may cause a UUID to be duplicated Spoofing another ID for malicious reasons Accidental database update statement People tend to give UUIDs magical properties but it needs to be treated similar to an unique integer.