I read this and I see a common thinking fallacy, when someone is inclined to believe something a priori they fit the evidence to their a priori beliefs.

No, its fairly simple - I misread

Why is that a bad answer?

Sorry - I misread the LLM answer - actually the LLM produced a correct answer here

No it is not: https://en.wikipedia.org/wiki/FIFO_%28computing_and_electron...

> No it is not…

That’s a queue, not a stack. The LLM response was correct.

But a stack is commonly LIFO, not FIFO?!

This reads like a line from a QwQ or Qwen3 CoT chain :)

I mean, is it wrong? It seems correct. Unless I'm missing something.

Oops, my bad. I seem to have misread. Sorry.

No, a stack is LIFO like it said. A queue is FIFO or in other words LILO “Last In Last Out”.

My last job was at the office. I had my work queue implemented as a stack of files. I would sit at my desk and, in an infinite loop, pop files from my stack and process them. Occasionally, my supervisor would come and push a new file onto my stack. A naive worker would think that, once I was done with my stack, I could finally get some sleep, but no. Our office implemented something called "work stealing," where, once I was done with my own work, I had to visit a random co-worker and pop files from their stack.

No. The LLM's answer is correct.