The few times I've been asked it, mentioning it by name results in them swiftly moving on ... the one time it didn't, the person didn't recognise the name and insisted I'd provided the wrong answer - which was a huge time saver for me in terms of turning them down.
It's entirely possible they were trying to force me to defend the position I'd taken. It probably annoyed them that I took their pet interview question (that they expected me to struggle with) and shot it down in front of them. Not that I'm claiming any special skills - probability is a hobby of mine, this problem was a gateway drug into it and I work at the very low/noddy end of quantitative finance - so a certain familiarity with things like these is to be expected. I was more surprised the guy didn't recognise the name when I said it.
