[akubera]

The bugs being referred to are from optional brackets in C:

    void foo() {
        ...
        if (expr)
            doA();
            doB();
        ...
    }

which is unambiguous to the compiler, but could (and I expect would, especially when glancing through a lot of code) cause misinterpretation by a human reader. We can more easily hallucinate the brackets than the indentation.

I disagree with the idea that indentation spaces are invisible; rather they are much more visible than a pair of brackets. This actually becomes a problem when you embed/indent too much and 70% of the line is spaces. It's all you see!

[secondcoming]

Yes, but pretty much every coding standard I've seen mandates the use of braces always. You do it without even thinking. Your example wouldn't pass code review.