> It's intelligent because it does intelligent things.

Most people would consider someone who can calculate 56863*2446 instantly in their head to be intelligent. Does that mean pocket calculators are intelligent? The result is the same.

> then they are the one meant to be doing the defining, and to tell us how it can be tested for. If they can't, then there's no reason to pay attention to any of it.

That is the equivalent of responding to criticism with “can you do better?”. One does not need to be a chef (or even know how to cook) to know when food tastes foul. Similarly, one does not need to have a tight definition of “life” to say a dog is alive but a rock isn’t. Definitions evolve all the time when new information arises, and some (like “art”) we haven’t been able to pin down despite centuries of thinking about it.

>Most people would consider someone who can calculate 56863*2446 instantly in their head to be intelligent. Does that mean pocket calculators are intelligent? The result is the same.

If you wanted to insist a calculator wasn't intelligent and satisfy my conditions then you can. At the very least you can test for the sort of intelligence that is present in humans but absent from calculators and cleanly separate the two. These are very easy conditions if there is some actual real difference.

>That is the equivalent of responding to criticism with “can you do better?”. One does not need to be a chef (or even know how to cook) to know when food tastes foul.

No it's not, and this is a silly argument.

You come across a shiny piece of yellow metal that you think is gold. It looks like gold, feels like gold and tests like gold. Suddenly a strange fellow comes about insisting that it's not actually gold. No, apparently there is a 'fake' gold. You are intrigued so you ask him, "Alright, what exactly is fake gold, and how can I test or tell them apart ?". But this fellow is completely unable to answer either question. What would you say about him ? He's nothing more than a mad man rambling about a distinction he made up in his head.

I'm not going to tell you to stop believing in your fake gold, but I am going to tell you I and no one else can be expected to take you seriously.