You can call a function the compiler doesn't know about, but god help you if there happens to be an identical symbol in the table; it will link to literally anything, including an integer. This should pretty much always be turned off by setting implicit functions to be errors.

Also, this explains all the prefixing that OP was complaining about lol, or at least that's one reason. I saw a particularly bad bug, due to poor naming decisions. Less is not always more, even if it annoys you.