#### Daniel Duffy

##### C++ author, trainer

*after the Riemann integral of course, which in theory is completely useless but in practice is all that is used.*

LOL, Archimedes would roll over in his grave were he alive today. He invented all this stuff and the 20th century mathematicians formalized it.

**you are missing the purpose of measure theory**. some people think as follows: if math topic X is not constructive, it is useless for application, therefore it is pointless to learn it. of course, this is naive and stupid. [...]I doubt it, but you could be right, During my 9 years in university (3 maths degrees) I never had reason to apply measure theory, with the exception of the Rudin stuff and probability in Banach space. And my lecturer had been a PhD graduate of William Feller at Princeton. Maybe he did not tell us everything.

For me the two least applicable subjects were MT and Category Theory. And awfully boring.

Lebesgue measure is fine; why the smoke screen with fancy Daniell integrals (which no one one uses, correct me if I am wrong. Maybe accept defeat, it's like VHS versus BETAMAX.

The Bourbaki schools loves all that axiomatic mathematics.

Anyways, I'm beyond convincing; it's all those MFE folk who need more help.

To be honest, the discussion is becoming tedious, especially when it becomes

*ad hominem.*Would you say the same to a paying customer?

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