One issue with that is that in my new hire coaching, I've had to tell the new folks to dig deeper and not be so dependent on that experienced guy next to them who just knows everything. If they ask a question and their coworker just says the number, say "Stop. Where would be the right way for me to find that number? I want to verify that you're right because this is my drawing and it's on me if it's not right. And even if you are correct, you could get hit by a bus tomorrow and then I'd need to do this on my own. Where's the source?"
More and more, I am starting to dislike the personality types that memorize the numbers. They make new hire training harder. I also wonder if they do it because they're trying to impress somebody.
I am no longer impressed by it. Memorizing numbers is usually just a matter of working on the same product for a long time.
You know what is a rare, incredibly helpful skill that I'm impressed by? Writing some shit down. Being organized. Empowering a team around you.
That's what makes you stick out, to me. I will be impressed with anyone who shares information in a way that everyone understands, so lots of people can quickly find what they need to get all their jobs done.
I'm impressed when nobody has to memorize numbers.