What is IQ? Why do the two doctors and Burt disagree on the definition of IQ?
Excerpt:

"I'm not sure what an LO. is. Dr. Nemur said it was something that
measured how intelligent you were-like a scale in the drugstore weighs
pounds. But Dr. Strauss had a big argument with him and said an LO. didn't
weigh intelligence at all. He said an LO. showed how much intelligence you
could get, like the numbers on the outside of a measuring cup. You still had
to fill the cup up with stuff.
Then when I asked Burt, who gives me my intelligence tests and works
with Algernon, he said that both of them were wrong (only I had to promise
not to tell them he said so). Burt says that the 1.0. measures a lot of different
things including some of the things you learned already, and it really isn't any
good at all.
So I still don't know what LO. is except that mine is going to be over 200
soon. I didn't want to say anything, but I don't see how if they don't know
what it is, or where it is-I don't see how they know how much of it you've
got."

I think they disagree because intelligence may be different for everyone, and especially as a doctor, you tend to, I guess you could say "go against the flow of things" Like what I mean by that is, how do you think people have come up with great things that changed/progressed the world? Because they probably went against or changed something like an idea, that was already in place.

Explanation:

IQ is a score of intellect. Dr. Nemur basically agrees with this definition, that IQ is measured by a number, like in the line, "measured how intelligent you were-like a scale in the drugstore weighs pounds" LO believes that intelligence isn't measured by how much of it you have, but how much you COULD have. Like, "You still had to fill the cup up with stuff (intelligence)"

Burt, on the other hand, believes that they are both wrong, however we don't know what his definition is though.