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Synthesis is harder than analysis

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31–40 of 43 posts

Re: Synthesis is harder than analysis

#31
post #9
post #3

> (Note: I asked AI for the integral of the Gaussian, I hope it got it right!) It seems like malpractice to not even check this.

It's an illustration for a blog post on a largely different subject, it really doesn't matter. Who would be looking up the integral of one of the most common functions in applied math in a random philosophical article aimed mostly at SREs?

All you have to do is open the wikipedia page on erf and it's right there.

Re: Synthesis is harder than analysis

#32
> Unfortunately, in our industry we haven’t recognized building up synthesis expertise as a first-class thing.

Good shout out. Same as with integral calc though, a bag of common tricks can get you pretty far. Would make for a good training regimen.

Re: Synthesis is harder than analysis

#33
> Differentiation is a “local” operation: to compute the derivative of a function at a point you only have to know how it behaves in a neighborhood of that point. But integration is a “global” operation: to compute the definite integral of a function in an interval you have to know how it behaves on the entire interval (and to compute the indefinite integral you have to know how it behaves on all intervals). That is a lot of information to summarize. Generally, local things are much easier than global things.

Is that true? The derivative is a global answer. An equation that gives you rate of change globally given any local input.

I think there’s a better answer here.

Re: Synthesis is harder than analysis

#35
post #27

> Synthesis is harder than analysis Taking this statement at face value, it means something in computer science: computing an answer (synthesis) is currently believed to be harder than checking an answer (analysis). The simplest example to illustrate the claim is that factoring a number is harder than multiplying the two factors to check that it equals the original number, or even to decide whether the original is pr…

except factorisation is stupid easy

Re: Synthesis is harder than analysis

#36
post #27

> Synthesis is harder than analysis Taking this statement at face value, it means something in computer science: computing an answer (synthesis) is currently believed to be harder than checking an answer (analysis). The simplest example to illustrate the claim is that factoring a number is harder than multiplying the two factors to check that it equals the original number, or even to decide whether the original is pr…

except factorisation is stupid easy

Go ahead and start cracking RSA keys, then.

Re: Synthesis is harder than analysis

#37
post #26

If my understanding of Kant is correct, then all analysis (i.e. taking things apart) is synthesis (i.e. putting things together) in reverse, and therefore the latter is a necessary prerequisite of the former. According to him, our minds very first brush with the real world (whatever that might be) is in the form of the "manifold" of raw sensory signals sans any form whatsoever (not even spatial or temporal arrangemen…

I haven't read Kant, but I like this description so much that I how it's indeed a good summary of some of his works. o7 Is this the main idea of Critique of Pure Reason?

Re: Synthesis is harder than analysis

#38
post #26

If my understanding of Kant is correct, then all analysis (i.e. taking things apart) is synthesis (i.e. putting things together) in reverse, and therefore the latter is a necessary prerequisite of the former. According to him, our minds very first brush with the real world (whatever that might be) is in the form of the "manifold" of raw sensory signals sans any form whatsoever (not even spatial or temporal arrangemen…

I haven't read Kant, but I like this description so much that I how it's indeed a good summary of some of his works. o7 Is this the main idea of Critique of Pure Reason ?

It's one of the main ideas -- I'm still only about a 3rd of the way through.

Re: Synthesis is harder than analysis

#40

Earlier quoted context omitted.

Go ahead and start cracking RSA keys, then.

careful what you wish for

Oh please. Do it then. It's just as easy as multiplication, right? Because otherwise it wouldn't have made any sense to bring it up. So go for it. If you don't want to be evil and MitM online banking sessions, publish the algorithm and collect your Turing award at your earliest convenience. Unless, perhaps, it is a bit harder, as said in the post you first responded to.
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