The most sure sign of overconfidence I often come across is oversimplification. In other words; stating that complicated things are, in fact, very simple and will only take a couples of minutes to fix/get done.
Statements like: "It's only data, put it in a table." or "How hard can it be?" raises a flag that a person might not fully appreciate the full scope of the problem or underestimate the development process.
For further actions, you may consider blocking this person and/or reporting abuse
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The most sure sign of overconfidence I often come across is oversimplification. In other words; stating that complicated things are, in fact, very simple and will only take a couples of minutes to fix/get done.
Statements like: "It's only data, put it in a table." or "How hard can it be?" raises a flag that a person might not fully appreciate the full scope of the problem or underestimate the development process.