I came in to work Monday morning, showed it off, and inadvertently triggered a firestorm. Later my boss told me not to do that again because it caused havoc with schedules and such.
So I quit and found a better job. Sometimes the new guy can make a better version themselves over the weekend, not because they’re a supergenius, but because they’re not hampered by 47 teams all trying to get their stamp on the project.
(In before “prime example of overconfidence!”: feel free to doubt. It was a CRUD app with a handful of models on a PostgreSQL backend. They were writing a new Python web framework to serve it, complete with their own ORM and forms library and validation library. Not because the existing ones wouldn’t work, mind you, but more out of not realizing that all these problems were already sufficiently solved for their requirements.)
3 engineers arrived - fashionably late. We explained them the situation and all we wanted from them was some GCP offering that would cure our woes and one that would cut our bills. The senior consultant - and presumably the only tech guy (rest seemed to be salesy) wasted our time like a used car salesman - he didn't even understand Google's own product portfolio and recommended us to use something like Spanner - which was totally not the solution to the problem, not to mention, expensive.
My boss and I left the meeting pissed off and he told me - "Neya, you probably know more about the product portfolio than these guys. Let's leave". That weekend, I went with my tried and trusted favorite Db - PostgreSQL - CloudSQL with a custom Elixir middleware based an old CMS I wrote a decade ago. After some trial and error, the solution worked flawlessly (and still does till date on auto-pilot). My client still has the lowest cost in the region - 1/3rd the cost of their competitors...7 years later. Back then, there was no vibe-coding, no AI, no auto-completion. Just pure thinking and experimentation.
All this just to say I agree that the new guy sometimes can make the best solutions to a problem and not always screw up. I always listen to new hires these days (now I'm a fractional / CTO) because you never know who could pull off that 1/3rd cost cutting framework move.