I hope I'm past the part of my career where I go on cold job interviews but if I ever had to go on another job hunt, I'd simply announce that I'm a web develope

I hope I'm past the part of my career where I go on cold job interviews but if I ever had to go on another job hunt, I'd simply announce that I'm a web developer and not a algorithms person and it looks like I might not be the best fit for the position and just see how the interviewers respond. Anything less than tossing the playbook warrants a gentle suggestion that we shouldn't waste any more time here and why don't we just end the interview. Stand up, shake hands, thank them for their time, and walk out. Problems in the interview process should be seen as problems with company culture. I used to wonder about how to appropriately answer the question, "which companies are worth working for?" because it seems like you need a lot of time before you can really tell. But once I realized that the interview is just an extension of company culture, it got a lot easier to weigh opportunities. I mean, obviously, if you need the money you need the money, but developers are hot enough commodities that it doesn't take long before you're entrenched enough to be able to call the shots like that.