As someone who used to hang out in a few language channels on freenode, I completely understand why the lectures exist. You may have a good reason for asking the question you're asking, but the overwhelming majority of the time when a nick I don't recognize asks an esoteric question about low level optimization, it's because they are new to the language (and often programming in general), and have gone far down a rabbit hole they don't need to go down before asking for help.

When I tried to answer these kinds of questions, I always tried to start by asking questions to make sure I did fully understand the use case and the application. In my experience, a large percentage of people, regardless of how valid their question is, refused to give enough detail to allow me to actually understand their specific use case.

After repeating that cycle several times a week for a few years, it becomes very temping to just shut down the weird esoteric crap with a canned response that might get newbies pointed in the right direction. A small handful of people will stick around to explain why they really do understand their problem and need an answer to the question they are asking. A small handful of newbies will take the advice of the canned response and learn from it. The rest were largely not going to lead to an interesting conversation no matter what.

I agree. Programming forums are full of this crap. I hate asking a pretty straightforward question online and getting that patronizing "But what are you really trying to do?" response.

What I'm really trying to do is get an answer to this specific question. I'm not asking you to re-think my problem statement. Thanks for not helping.

At the same time we're getting a lot of people with XY-problems. They think they know what the problem is and they think they know what they about have to do, while the real problem is somewhere else. If someone's intend with an asked question isn't clear, then "But what are you really trying to do?" is a valid question.

It's impossible for anyone to just know what you're intentions are and whether you understand the deeper semantics of a problem. More often than not, people try to do things for the wrong reasons.

I dunno, I've been on both sides of this. I agree it's really annoying when someone waltzes around without answering my question. But I've also seen people asking questions which sounded goofy to me, and when you finally get them to tell you want they are actually trying to do, there's a much easier and more direct approach.

I think it's great for people on the "answering" side to indicate that they're willing to go beyond the literal question and offer more general support.

But as soon the asker has turned down an offer of that sort once, I really really wish people who aren't going to answer the question being asked would stay out of the conversation.

Just say it's for Project Euler. That way they just accept that any optimizations you're asking for actually need to happen.