func isEven(s string) bool {
        num, _ := strconv.Atoi(s)
        return num % 2 == 0
    }

    func isEven(s string) (string, error) {
        f, err := strconv.ParseFloat(s, 64)

        if err != nil {
            return "invalid", err
        }
        num := int(f)
        if num%2 == 0 {
            return "even", nil
        }
        else if num % 2 != 0 {
            return "odd", nil
        }
        return "invalid", nil
    }

    func isEven(num int) bool {
        return num % 2 == 0
    }
    func isEvenSafe(s string) (bool, error) {
        num, err := strconv.Atoi(s)
        if err != nil {
            return false, err
        }
        return isEven(num), nil
    }

1. Someone who has only ever written code by tutorial, and has no idea of the architecture, performance considerations or usability implications of the code they're writing.

2. Someone who has got to a point in their career LLM Coding and is unable to write code without it because they don't understand what they're doing.

The problem occurs when one of these people:

- Is required to be good at the things they are not yet

- Proceeds as they always have because they are unaware of their skill gap

- (Optionally) gets promoted while things are still _just_ working

IME you hit these silent inflection points as a system begins to scale beyond the experience of the people involved. They survive for a while (Coyote time / the compass is still pointing north) until something happens (the whole thing falls off a cliff / starts to go south).