If you see your manager reading this, run.
One of the most famous quotes in the English language is the admonition from Pope’s Essay on Criticism:
A little learning is a dangerous thing;
drink deep, or taste not the Pierian spring:
there shallow draughts intoxicate the brain,
and drinking largely sobers us again.
It’s important to note that Pope is a lot more subtle in his language than is obvious at a glance. Pope does not say that a little knowledge is a bad thing, but that it is dangerous and intoxicating, and I think that’s exactly correct. When you start learning a new subject you have no sense of how much you don’t know and that can give you a false sense of security and lead to missteps. More learning gives you an idea of how huge the gaps in your knowledge are, and that’s an excellent antidote to unwarranted self confidence.
I think ‘a little learning’ is perfectly fine as long as you keep a humble attitude, and don’t pretend to be a world expert on things you’ve just learned. Real experts are incredibly friendly and willing to teach you if you show enthusiasm and ask questions humbly. On the flipside, watching someone who habitually pretends to be a guru make a complete ass of themselves when in a meeting with a actual experts is incredibly satisfying- and it’s even funnier if the wannabe guru walks out of the meeting without realizing the impression they just made.