Earlier quoted context omitted.
The point is: If the candidate asks a relevant question that the interviewer cannot solve in time, the company failed at its own game because the candidate proved that he/she is better qualified than the company's representative, given the rules of the game. What excuse does the company have for not hiring the candidate now?
The 'excuse' that there are better or equally qualified candidates out there. Many companies hire to fill in expertise, so the person who you are interviewed by may be less experienced than you in a particular technology.
In that case, these companies should be ok with registering their names in an online registry saying they rejected a candidate for someone who is better qualified. For the following 6 months, they cannot complain that that cannot find qualified candidates.
> Many companies hire to fill in expertise, so the person who you are interviewed by may be less experienced than you in a particular technology.
So the interviewer should be asked a question by the candidate in that particular technology and if they can't answer, the candidate should be hired.