> Saying "I don't know" like this in an interview scenario is nearly impossible for most candidates and only serves to humiliate rather than prove their abilities.

I don't think this is true only in interviews though. I have worked with people who can't seem to admit they don't know something and they're difficult to work with.

It's completely fine if you can't do something. What's not fine is that you fail to communicate it to those around you and create false expectations.

That being the case, I think it's fair to score a candidate negatively if they aren't able to say they don't know something.

It’s really not - as someone whose done 100s of interviews for a brand name tech company I don’t see this as a problem. The goal being for candidate to indicate their lack of knowledge but work through it. As an engineer you will encounter problems you don’t know how to solve. Pretending you know and bullshitting is a red flag.

There are hundreds of ways to do this without intentionally tilting the candidate into failure later. As an interviewer you have absolute authority in the room -- don't abuse it and destroy the candidate.

I think you are misunderstanding my point by indicating that interviewer's shouldn't abuse their power.

To be specific, I do a lot of things up front in an interview to help the candidate. The most important is informing them that they should treat technical exercises as a team exercise where we are teammates working together. Furthermore, I declare that there is no penalty for my assistance during the interview. The idea is for us to work together to solve a problem, my interest is in how they think and work through the problem. Furthermore, I explicitly tell them for discussion on prior experience and technical facets of interview that they are welcome to indicate they do not have an answer to my question or are unsure what's next.

All of this combined creates a very pleasant experience which is an important part of my goal as an interviewer. I'm not trying to embarrass people, though I am trying to make a informed hiring decision which is a very expensive endeavor for my company. Therefore, beyond letting candidate enjoy themselves, my main focus is to ensure that I have sufficient confidence to hire or be willing to walk away due to lack of conclusive data.

You are proving the OPs point: they are looking for people where "I don't know" is acceptable in collaborating with others, not for people where saying "I don't know" is considered a failure or humiliating. If someone is humiliated being asked a question they don't know the answer to, then they aren't a culture fit.

As Jeff Bezos says, the older he gets, the more he realizes he doesn't know.

Most people have no issue with saying "I don't know." I've worked with people that can't say "I don't know" - they are incredibly toxic.

> Saying "I don't know" like this in an interview scenario is nearly impossible for most candidates and only serves to humiliate rather than prove their abilities.

with hacker news so utterly convinced that employers have literal powers of life and death over their employees, when do you expect the potential employee to regain the ability to tell their employer that they don't know? after they've quit their previous job and moved across the country? a week after that? six months? maybe after they've got some kids?