Mate if I could draw it in crayon to help you understand I would, but unfortunately the option isn't there on the forum. Let me try to help though.
For around the 400th time to you this week - I DO NOT THINK MICHAEL KEANE IS A GOOD PLAYER, I JUST DON'T NECESSARILY THINK HE'S ANY WORSE THAN WHOEVER WE SIGNED ON A FREE INSTEAD WOULD BE.
The same principle applies to Harrison. I think when people say he's the worst player we've ever had and he's a League One player and all that then they're being ridiculously hyperbolic. I have a season ticket and there were people sat around me last year who just blamed him for absolutely everything, and were hyper-critical every time the ball went within about 10 yards of him. On that basis I'm quite comfortable saying he became a bit of a scapegoat and wasn't actually as terrible as people often made out. That - fairly obviously for those capable of thinking - doesn't mean that I think he's fantastic and we should bring him back.