(a person who expresses opinions on matters outside the scope of their knowledge or expertise)

You start explaining something you know well, but are interrupted
Your train of thought is rudely disrupted
By your know-it-all colleague who chimes in with an explanation
Stealing your thunder without hesitation
Except, despite the eloquent speech the content
Is woefully inaccurate to a great extent
Your colleague had fibbed to displace you
You’ve seen this before, this is not an action new
Your colleague likes to explain anything under the sun
Sometimes it is annoying, sometimes pure fun
*
It is exhausting to have ultracrepidarians around you
Who hi-jack every conversation and proceed to
Expound confidently on topics they have no idea about
Thinking this gives them tremendous clout
They give opinions with the authority of an expert
Pass judgment on others without effort..
*
Unfortunately in the current era their tribe
Continues to grow, as influencers and leaders they thrive
Watch out for ultracrepidarian experts so you do not get drawn in
To the spiral of their rhetoric, and believe the lies that they spin

Did you know one of my supervisors?! 😂 I think, eventually, people saw through her, but my gosh this was aggravating to listen to.
There is a scene in that old movie “Working Girl” that shows the ‘lowly secretary’ finally getting revenge on her know-it-all boss. The comeuppance was wonderful!
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There is a well known psychological theory known as “Drunning Krueger Effect”. It plots the level of confidence displayed on Y axis vs the level of knowledge on X axis. The graph tells the facts narrated in this nice & pertinent poem.
In hindi idiom, the same phenomenon is expressed as “अध जल गगरी छलकत जाए” & “थोथा चना बाजे घना”।
A very nice & meaningful poem indeed ✔️
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Thank you, Drunning Kreuger effect and ultracrepidarian both represent essentially the same kind of person
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