So, we have a group of people who lack sufficient skills for their job, and we have another group who _feel like_ they lack sufficient skills for their job. The author is claiming that these groups have no overlap whatsoever. There's absolutely no way that could be true. Considering how many people are bad at what they do, and how many people feel like they aren't good enough, surely there's at least one person in the world who is poor at their job and realizes it. The author supports their outlandishly broad generalization with nothing more than anecdotes. Extraordinary claims require extraordinary evidence, not anecdotes.
Surely there is one person in the world: that would be the anecdote to the data. We can't disregard something if there is one conflicting data point, unless we're talking about maths or proofs.
With that being said: if someone is feeling bad because they think they're an impostor, first they should:
1. Reflect if they really are
2. If yes, improve
3. If can't improve, either embrace it or quit
> Surely there is one person in the world: that would be the anecdote to the data. We can't disregard something if there is one conflicting data point, unless we're talking about maths or proofs.
The claim here was "no single counter-datapoint can possibly exist", so in this case, one counter-datapoint is indeed sufficient to prove the claim false.