Why _can_ you write &arr[0] in the first place? There is at least some logic behind it (which probably breaks down with multidimensional arrays, a feature that

Why _can_ you write &arr[0] in the first place? There is at least some logic behind it (which probably breaks down with multidimensional arrays, a feature that probably wasn't there from the start). In C, I suspect that at least in the beginning, there were never arrays on the type and expression level - only pointers. What security problems are exactly caused by pointer decay? A similar thing also exists with calls through function pointers, and I do not think you can find many programmers who are willing to write (*foo)(x, y, z) when using function pointers (at least not when there are many, like when using e.g. OpenGL). Or worse, (&foo)(x, y, z) with normal functions.