Oofta
Legend
Speaking of proving stuff, can you show me where I ever made that argument? Or even broached it? That has nothing to do with the point I've been making about your example. Maybe you could just send me that Ulysses S. Grant when you've fail to find it?...
What other argument are you making? I honestly don't know what you're trying to prove or argue, other than to provoke a response so you can reply with a "gotcha".
My argument is simple: there are situations where an invisible creature can be detected and situations where they cannot unless you have supernatural abilities.