I don't know you. Think about what you are saying: on your first day of work, you are already convinced that you know so much more about the job that it makes the folks above you defensive. You are sure that the guy over you doesn't know anything. On your first day. I don't know how to spin this but you MIGHT be the problem in your employment situations. Days 1-9 in a new role, keep mouth shut. Don't care how smart you are, how experienced, how intuitive, how brilliant. Keep mouth shut and listen for a little while. Can't tell you how many new hires I've had to let go because they "knew it all" minute one, but had nothing but excuses when they couldn't do what they were asked to do. Oh, they had many good reasons why they couldn't do the job: conditions, conflicts, equipment. If this is you, you need to be self-employed OR really do some self-critique. I mean you NO disrespect, my interest in your situation is sincere, but your post really makes you sound like an insufferable know-it-all. Not saying you'r opinions are wrong, only that you are coming across as annoying.

We don't say "training under a guy" anymore. That's the beginning of too many pornos. Trained by, trained with are better alternatives.

So your first day you decided you knew more than anyone else. Same problem last job? Maybe it's you thinking you know everything. ydi

I would agree with what others said, and offer:don't fix anything on your first week to month of a new job (unless that IS the point of hire).even if you can prove it right it isn't worth it. you wont know how things in the company work, you wont know if any of it is intentional or if fixing them will cause a different problem. it sounds weird and ass backwards but a couple months into my current job I figured out some of our main issues were on purpose. some as patchwork fixes, some due to gentleman's agreements between managers and suppliers. either way pointing out and proving them wrong is a quick way out of a job. learn the company, learn the people, learn the why'd, then think about what to try and fix. BTW someone did try to fix a money sink at work to increase profit sharing, but it would cost the manager more and the worker became "redundant".

Welcome to 2020

me too, they're everywhere. just keep rocking your style

I'm thinking the problem might be you. You've been there one day and already you think you know more than anyone else.