I think you're right. Try asking GPT-5 this:

> Are the parentheses in ((((()))))) balanced?

There was a thread about this the other day [1]. It's the same issue as "count the r's in strawberry." Tokenization makes it hard to count characters. If you put that string into OpenAI's tokenizer, [2] this is how they are grouped:

Token 1: ((((

Token 2: ()))

Token 3: )))

Which of course isn't at all how our minds would group them together in order to keep track of them.

[1] https://news.ycombinator.com/item?id=47615876 [2] https://platform.openai.com/tokenizer