You got that right.
I can tell if I'm *NOT* going to hire someone in the first 30 seconds of an interview.
Do I want to hire them? That's a harder question. But the very first bit is the key, always.
I wrote a paper several years back on the decline of HR. it all started with diversity and companies realizing that for some strange reason their job candidates were horrible. This was followed by garbage software that filtered resumes and wasn’t much better.
This is how I did it. I went to HR and said give me every resume for the position I am hiring. Don’t care about requirements. Every Friday from 10:30 to 1:00 I would lock my door, eat lunch and read resumes. Most managers know what they want and can scan a resume in 10-15 seconds.
My phone interview was simple. I introduced myself, said I have your resume and was validating that it was true to the word and not crap. The ones who threw crap against the wall wouldn’t bother showing up for the interview.
My in person started with a handshake and looking the candidate in the eye. Check on confidence. Would ask if the candidate had any questions. If yes, we proceeded. If no, then I would ask a couple of garbage questions, followed with a tour of the data center which led to the exit.
It was simple and effective.