Practiced saying 'I don't know, here's how I'd find out' instead of guessing and it went over way better than expected

Used to bluff my way through anything I wasn't sure of in interviews, half-confident answers that usually unraveled under one follow-up question. Started doing the opposite — flat out saying I didn't know, then walking through where I'd look or who I'd ask. Had an interviewer last week say that was the most useful answer of the round, because it's basically what the job actually looks like. Still feels counterintuitive every single time I do it.