[ge96]

People do change over time, I used to write "ha" after every sentence for some reason

[wholinator2]

You know, i had a particularly cringy period in which i put "la" at the end of sentences.

[ted_bunny]

Don't throw the baby out with the bathwater. "Ooh, la" sounds really unnatural.

But on a serious note, what did "la" mean in your context? I've never seen this.

[durkie]

It’s a common thing for speakers of Singaporean English to end sentences with la/leh. But no idea if that’s what’s going on here.

[mchaver]

In one use case, it is kind of a verbal exclamation point, but it has more meanings and uses than just that. Likely originates from Hokkien, but it has evolved into it is own thing. If you are curious, more details here https://en.wikipedia.org/wiki/Singlish

[nurettin]

In Turkish la at the end disrespectfully refers to a male person.

[Exoristos]

You left off something.

[zxcvasd]

sure, not denying that. my writing style is fairly different now in my 40s than it was in my late teens/early twenties.

but, those changes are usually pretty gradual and relatively small. thats why when attempting to identify someone via writing, you look at several aspects of the writing and not just word choice (grammar, use of specific slang, sentence length, paragraph structure, punctuation, etc.). it is highly unlikely that all aspects of someones writing changes at the same time. simply removing "ha" is inconsequential to identification if not much else changed.

additionally, this data is typically combined with other data/patterns (posting times, username (themes, length, etc.), writing that displays certain types of expertise, and more) to increase the confidence level of correct identification.