Doubtless

I am certain of it and nothing could change my mind that he did it, because I had to be there at that time, or at least I am pretty sure it was that time, but anyway I ended up there, although I may have been a little late, or possibly early depending on what the time was supposed to be, but I have no doubt that I was at least there when he came, that is, someone like him came, because they both had the hair with the thing and the stuff on his back, so it couldn't have been anyone else, even though I never really saw his face, but anyway they guy did it, you know, the thing with that stuff that, at least, I though was with the stuff, although it may have been different stuff, but there was stuff to it, because what's the point if it wasn't the right stuff?

So yes, I am positive he did it.