So someone can be the most intelligent for a certain job/task but someone else can be more intelligent for an other.
It's such a tough thing to nail down.
- Is it intelligence to flip a burger? I mean, yes some level of brain power is required to tell your arm to move a spatula, but is it what we're thinking of when we think of the word intelligence?
- What if you carry out a series of steps carefully when you flip the burger? "Cook it 2 min per side, then move it to the plate, scrape off the residue, next patty".
- What if there are more steps? "Put the steak in the grinder and grind out a half pound. Shape it into a patty. Add 3 kinds of seasoning. Add proper amount of oil. For a medium rare burger, sear both sides at 800 degrees, followed by cooking at 350 degrees on each side. Make sure that this utensil doesn't touch that one, wash these 3 things when you're done, put these items back. When you wash the grinder you need to remove such-and-such covering, make sure you get this element clear of any ground beef... etc. etc."
What if you invented the steps?
"Hmmm... this burger is excellent, but I think we could achieve a better outer texture if we adjusted the timing slightly. The lettuce on this burger doesn't compliment the spices, I think we could switch to arugula."
What if you invented the steps and nobody likes it?
What if you invented the steps and EVERYBODY likes it, and you're renowned for your burgers?
What if you invented the steps, and you also refined a secret listing of sources for ingredients from farmers who use exactly the techniques that bring out the best flavor?
What if you didn't just invent the steps for the burger, but invented the steps for an entire menu of dishes, each of which is separately renowned by critics and connoisseurs?
I can do this for math too. Start with the inability to make change and work your way all the way up through measuring, unit conversions, basic engineering, and particle physics.
Somewhere in there is enough brain power that we consider it "intelligent". We don't consider to be intelligent to fire neurons to tell your arm to move a tool. But somewhere along the line the neuron firing gets complex enough that we start to call it "intelligence". It's a fuzzy word, but it definitely represents something real.
I'm not sure I'm of the opinion that it simply cannot be measured, but I'm definitely of the opinion that we're not good at measuring it. And what's more, I think that if we could measure it it would look more like measuring a weight lifting competition. Nobody looks at those competitions and thinks "wow that person is innately stronger than I am". They recognize that the person worked that muscle really hard in that particular way to achieve that result. Kinda like watching jeopardy. I hope nobody watches that and thinks "those people are so smart". But you wouldn't say that because someone can do the most pull-ups of anyone in the world that the same person would win a deadlifting competition or win a marathon, and that's the kind of mistake we make when we try to assess intelligence. We seem to think that the person who can deadlift the most is the smartest, meanwhile someone is out there running the world's fastest marathon and we call them weak because they can barely deadlift anything.