Here's why:
* Evolution of the Phrase: The term "smart aleck" likely evolved over time through various slang expressions. It's not like a single person invented it on a specific date.
* Earliest Known Use: The earliest recorded use of the term appears to be in the 1890s. However, it's likely that the concept of a "smart aleck" existed long before that, with people using different terms for the same type of character.
* Regional Variations: The term might have emerged in different regions at different times, further complicating its origin.
In conclusion: While we can trace the term "smart aleck" back to the 1890s, its true origin is shrouded in the evolution of language and slang.