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Author Discussion

mcdjl

1,613 posts

64 months

[news] 
Monday 2nd July 2012 quote quote all
davepoth said:
There's a wikipedia article, predictably.
http://en.wikipedia.org/wiki/Dynamic_stochastic_ge...
Plenty of papers referenced in there. And as it turns out it's not an economic state at all, but an economic model. And it's a refined version of Keynesianism.
http://zombiecon.wikidot.com/ch3:beginnings
I'm hoping that VPs link include an idiots guide to it as those are beyond me somewhat. What i did get though is the DSGE is a theory of how the world works. It can be used to predict how the world will respond to certain inputs within limitations. This is because the world is massively complicated and to model it properly you'd need a 2nd world essentially to experiment on. This then relies on the operator making assumptions, and determining to an extent what they'd like the outcome to be. Many people far cleverer than me (or with more understanding as they all seem unable to decide whos right) then argue over which bits are more/less right than others. But from what I read it, it would appear that since the model is largely based on prior experience it points to the world roughly heading in the direction it is. The relevance to Scottish independence then seems to be a change in the institutional frame work. However while this may appear to be big, in the scheme of the whole world i imagine its not really: the effect in the model would be roughly the same as changing the party in control in westminster, which is ummm not much really?

Davepoth/Vp am I about right?

ViperPict

8,436 posts

106 months

[news] 
Monday 2nd July 2012 quote quote all
mcdjl said:
davepoth said:
There's a wikipedia article, predictably.
http://en.wikipedia.org/wiki/Dynamic_stochastic_ge...
Plenty of papers referenced in there. And as it turns out it's not an economic state at all, but an economic model. And it's a refined version of Keynesianism.
http://zombiecon.wikidot.com/ch3:beginnings
I'm hoping that VPs link include an idiots guide to it as those are beyond me somewhat. What i did get though is the DSGE is a theory of how the world works. It can be used to predict how the world will respond to certain inputs within limitations. This is because the world is massively complicated and to model it properly you'd need a 2nd world essentially to experiment on. This then relies on the operator making assumptions, and determining to an extent what they'd like the outcome to be. Many people far cleverer than me (or with more understanding as they all seem unable to decide whos right) then argue over which bits are more/less right than others. But from what I read it, it would appear that since the model is largely based on prior experience it points to the world roughly heading in the direction it is. The relevance to Scottish independence then seems to be a change in the institutional frame work. However while this may appear to be big, in the scheme of the whole world i imagine its not really: the effect in the model would be roughly the same as changing the party in control in westminster, which is ummm not much really?

Davepoth/Vp am I about right?
Yes, that's a pretty fair account of things. But I am not even getting as specific as models that deal with economics (that is not my field) but the general rules of complex systems thoery, which can apply to any highly non-linear system.

I sent you an email with some general texts that are pretty decent first ports of call in this and related areas of maths.

I'm concious of not taking the discussion too far off topic though (as much as I love talking science)! biggrin

ViperPict

8,436 posts

106 months

[news] 
Monday 2nd July 2012 quote quote all
rich1231 said:
VP, will the rest of the UK be better or worse off after Scotland breaks free?
Would you be surprised if I said, most likely, much the same as now?

davepoth

19,925 posts

68 months

[news] 
Monday 2nd July 2012 quote quote all
mcdjl said:
I'm hoping that VPs link include an idiots guide to it as those are beyond me somewhat. What i did get though is the DSGE is a theory of how the world works. It can be used to predict how the world will respond to certain inputs within limitations. This is because the world is massively complicated and to model it properly you'd need a 2nd world essentially to experiment on. This then relies on the operator making assumptions, and determining to an extent what they'd like the outcome to be. Many people far cleverer than me (or with more understanding as they all seem unable to decide whos right) then argue over which bits are more/less right than others. But from what I read it, it would appear that since the model is largely based on prior experience it points to the world roughly heading in the direction it is. The relevance to Scottish independence then seems to be a change in the institutional frame work. However while this may appear to be big, in the scheme of the whole world i imagine its not really: the effect in the model would be roughly the same as changing the party in control in westminster, which is ummm not much really?

Davepoth/Vp am I about right?
Conventional macroeconomic theory has it that models should be able to replicate the economic world correctly if they are made well enough. There are many arguments about the merits of those models. I believe that VP has got himself a bit confused into thinking that the DGSE model can be used as a framework onto which an economy can be built when it is at best an imperfect way of describing an already existing economy.


ViperPict

8,436 posts

106 months

[news] 
Monday 2nd July 2012 quote quote all
davepoth said:
mcdjl said:
I'm hoping that VPs link include an idiots guide to it as those are beyond me somewhat. What i did get though is the DSGE is a theory of how the world works. It can be used to predict how the world will respond to certain inputs within limitations. This is because the world is massively complicated and to model it properly you'd need a 2nd world essentially to experiment on. This then relies on the operator making assumptions, and determining to an extent what they'd like the outcome to be. Many people far cleverer than me (or with more understanding as they all seem unable to decide whos right) then argue over which bits are more/less right than others. But from what I read it, it would appear that since the model is largely based on prior experience it points to the world roughly heading in the direction it is. The relevance to Scottish independence then seems to be a change in the institutional frame work. However while this may appear to be big, in the scheme of the whole world i imagine its not really: the effect in the model would be roughly the same as changing the party in control in westminster, which is ummm not much really?

Davepoth/Vp am I about right?
Conventional macroeconomic theory has it that models should be able to replicate the economic world correctly if they are made well enough. There are many arguments about the merits of those models. I believe that VP has got himself a bit confused into thinking that the DGSE model can be used as a framework onto which an economy can be built when it is at best an imperfect way of describing an already existing economy.
In theory ANYTHING can be modelling with precise enough input data. But that that never exists. In highly non-linear systems, the slightest error in an input variable will spiral out to orders of magnitude variation after a relatively modest number of time steps/ iterations. That is why I argue AGAINST deterministic models in this case. Complex systems theory under such non-linear conditions tells us we can only make general predictions (e.g., little change in a new equilibrium state if there are relatively little changes to boundary conditions).

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TheHeretic

68,101 posts

124 months

[news] 
Monday 2nd July 2012 quote quote all
ViperPict said:
In theory ANYTHING can be modelling with precise enough input data. But that that never exists. In highly non-linear systems, the slightest error in an input variable will spiral out to orders of magnitude variation after a relatively modest number of time steps/ iterations. That is why I stubble to answer any simple questions, and insist upon muddying everthing with things I think sound very complex. Complex systems theory under such non-linear conditions tells us we can only make general predictions (e.g., little change in a new equilibrium state if there are relatively little changes to boundary conditions).
wink

ViperPict

8,436 posts

106 months

[news] 
Monday 2nd July 2012 quote quote all
TheHeretic said:
ViperPict said:
In theory ANYTHING can be modelling with precise enough input data. But that that never exists. In highly non-linear systems, the slightest error in an input variable will spiral out to orders of magnitude variation after a relatively modest number of time steps/ iterations. That is why I stubble to answer any simple questions, and insist upon muddying everthing with things I think sound very complex. Complex systems theory under such non-linear conditions tells us we can only make general predictions (e.g., little change in a new equilibrium state if there are relatively little changes to boundary conditions).
wink
Alternatively your feeble brain cannot grasp relatively simple maths theory.

I genuinely think your posts arise from a frustration of realising you're not clever enough to understand this.

TheHeretic

68,101 posts

124 months

[news] 
Monday 2nd July 2012 quote quote all
ViperPict said:
Alternatively your feeble brain cannot grasp relatively simple maths theory.

I genuinely think your posts arise from a frustration of realising you're not clever enough to understand this.
Maybe... However, your posts seems to arise when you are asked simple questions, and it seems to be an overconfident way of avoiding answering, as you have done this entire thread. You seem to think that dropping in a whole bunch of complex sounding stuff will substitute for an answer. It doesn't. So come on then, explain your stance, for a feeble minded person. Go ahead. I await your content free post.

mcdjl

1,613 posts

64 months

[news] 
Monday 2nd July 2012 quote quote all
ViperPict said:
Yes, that's a pretty fair account of things. But I am not even getting as specific as models that deal with economics (that is not my field) but the general rules of complex systems thoery, which can apply to any highly non-linear system.

I sent you an email with some general texts that are pretty decent first ports of call in this and related areas of maths.

I'm concious of not taking the discussion too far off topic though (as much as I love talking science)! biggrin
Yup, got them cheers, it looks like i can get one possibly two of them, though the other one is out of budget and unavailable. I think we got there from my failed attempts to sum up stochastic equilibrium which you seemed to be suggesting would occur in Scotland post independence, to Scotlands benefit.

davepoth

19,925 posts

68 months

[news] 
Monday 2nd July 2012 quote quote all
ViperPict said:
In theory ANYTHING can be modelling with precise enough input data. But that that never exists. In highly non-linear systems, the slightest error in an input variable will spiral out to orders of magnitude variation after a relatively modest number of time steps/ iterations. That is why I argue AGAINST deterministic models in this case. Complex systems theory under such non-linear conditions tells us we can only make general predictions (e.g., little change in a new equilibrium state if there are relatively little changes to boundary conditions).
And yet you told me that you can predict oil prices for 50-100 years. How?

Wombat3

5,188 posts

75 months

[news] 
Monday 2nd July 2012 quote quote all
ViperPict said:
TheHeretic said:
ViperPict said:
In theory ANYTHING can be modelling with precise enough input data. But that that never exists. In highly non-linear systems, the slightest error in an input variable will spiral out to orders of magnitude variation after a relatively modest number of time steps/ iterations. That is why I stubble to answer any simple questions, and insist upon muddying everthing with things I think sound very complex. Complex systems theory under such non-linear conditions tells us we can only make general predictions (e.g., little change in a new equilibrium state if there are relatively little changes to boundary conditions).
wink
Alternatively your feeble brain cannot grasp relatively simple maths theory.

I genuinely think your posts arise from a frustration of realising you're not clever enough to understand this.
If that is indeed the case I'd suggest its highly likely that the political class in Scotland post independence will also fail (spectacularly) to understand any of that and will therefore carry on doing what they do regardless. I.e. they will try the same failing tax and spend solutions that they advocate now until they run out of other people's money, disappear up their own backsides and go "how the fk did that happen then?"

...and this , at the most simplistic level is why things will not change significantly any time soon (and the very simplest thing that you overlook). The same political goons will , for the most part, have their hands on the levers. Only they'll be pulling those levers within much more highly constrained circumstances (cost of borrowing, etc etc etc yada yada).

Meanwhile the Wall Street vultures will indeed be circling.

You don't need any big words or complex (but dubious) theories to see that little lot. These simple external factors will have far, far more influence on what would actually happen than some nut-job theorising from the top of his hill till he's blue in the face rolleyes




ViperPict

8,436 posts

106 months

[news] 
Monday 2nd July 2012 quote quote all
mcdjl said:
ViperPict said:
Yes, that's a pretty fair account of things. But I am not even getting as specific as models that deal with economics (that is not my field) but the general rules of complex systems thoery, which can apply to any highly non-linear system.

I sent you an email with some general texts that are pretty decent first ports of call in this and related areas of maths.

I'm concious of not taking the discussion too far off topic though (as much as I love talking science)! biggrin
Yup, got them cheers, it looks like i can get one possibly two of them, though the other one is out of budget and unavailable. I think we got there from my failed attempts to sum up stochastic equilibrium which you seemed to be suggesting would occur in Scotland post independence, to Scotlands benefit.
I can't say with any certainty that it would be in Scotland's benefit. I'd hope it could be and it's certainly not in the realms of impossibility, certainly in the longer term (. But we're only dealing with economics here. There is much more to the standard of life in a country than that. And I don't think that the current Westminster government is doing much for the non-economic factors (or the economic ones, for that matter).

mcdjl

1,613 posts

64 months

[news] 
Monday 2nd July 2012 quote quote all
ViperPict said:
I can't say with any certainty that it would be in Scotland's benefit. I'd hope it could be and it's certainly not in the realms of impossibility, certainly in the longer term (. But we're only dealing with economics here. There is much more to the standard of life in a country than that. And I don't think that the current Westminster government is doing much for the non-economic factors (or the economic ones, for that matter).
What are the economic factors over which the government can affect my quality of life (apart from just f***ing off and leaving me in peace)? So long as I can move around, don't get burgled/mugged etc and have a hospital if i need it the less they do the better. Is this what you hope to be the outcome of the Scottish government?
Ok maybe the politicians can empty my bins and take away my sewage as a bonus.

BliarOut

53,510 posts

108 months

[news] 
Monday 2nd July 2012 quote quote all
ViperPict said:
TheHeretic said:
ViperPict said:
In theory ANYTHING can be modelling with precise enough input data. But that that never exists. In highly non-linear systems, the slightest error in an input variable will spiral out to orders of magnitude variation after a relatively modest number of time steps/ iterations. That is why I stubble to answer any simple questions, and insist upon muddying everthing with things I think sound very complex. Complex systems theory under such non-linear conditions tells us we can only make general predictions (e.g., little change in a new equilibrium state if there are relatively little changes to boundary conditions).
wink
Alternatively your feeble brain cannot grasp relatively simple maths theory.

I genuinely think your posts arise from a frustration of realising you're not clever enough to understand this.
roflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflrofl
roflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflrofl
roflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflrofl

fk me, my irony meter has just gone off the scale

rofl


Guam

15,406 posts

137 months

[news] 
Monday 2nd July 2012 quote quote all
BliarOut said:
roflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflrofl
roflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflrofl
roflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflrofl

fk me, my irony meter has just gone off the scale

rofl
Mine simply imploded, is this the new discussion about maths and misuse of statistical analysis thread then?

ViperPict

8,436 posts

106 months

[news] 
Monday 2nd July 2012 quote quote all
Guam said:
BliarOut said:
roflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflrofl
roflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflrofl
roflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflroflrofl

fk me, my irony meter has just gone off the scale

rofl
Mine simply imploded, is this the new discussion about maths and misuse of statistical analysis thread then?
Statistical analysis? Maths applies to absolutely everything.

davepoth

19,925 posts

68 months

[news] 
Monday 2nd July 2012 quote quote all
davepoth said:
ViperPict said:
In theory ANYTHING can be modelling with precise enough input data. But that that never exists. In highly non-linear systems, the slightest error in an input variable will spiral out to orders of magnitude variation after a relatively modest number of time steps/ iterations. That is why I argue AGAINST deterministic models in this case. Complex systems theory under such non-linear conditions tells us we can only make general predictions (e.g., little change in a new equilibrium state if there are relatively little changes to boundary conditions).
And yet you told me that you can predict oil prices for 50-100 years. How?
Any answer VP?

ViperPict

8,436 posts

106 months

[news] 
Monday 2nd July 2012 quote quote all
davepoth said:
davepoth said:
ViperPict said:
In theory ANYTHING can be modelling with precise enough input data. But that that never exists. In highly non-linear systems, the slightest error in an input variable will spiral out to orders of magnitude variation after a relatively modest number of time steps/ iterations. That is why I argue AGAINST deterministic models in this case. Complex systems theory under such non-linear conditions tells us we can only make general predictions (e.g., little change in a new equilibrium state if there are relatively little changes to boundary conditions).
And yet you told me that you can predict oil prices for 50-100 years. How?
Any answer VP?
I never said I can predict oil prices! I said that I'd be very confident that they won't crash. Purely on the basis of the ever increasing demand for energy.

mcdjl

1,613 posts

64 months

[news] 
Monday 2nd July 2012 quote quote all
ViperPict said:
I never said I can predict oil prices! I said that I'd be very confident that they won't crash. Purely on the basis of the ever increasing demand for energy.
So what if the whole world realises how right Salmond is and converts to renewable energy?

ViperPict

8,436 posts

106 months

[news] 
Monday 2nd July 2012 quote quote all
mcdjl said:
ViperPict said:
I never said I can predict oil prices! I said that I'd be very confident that they won't crash. Purely on the basis of the ever increasing demand for energy.
So what if the whole world realises how right Salmond is and converts to renewable energy?
The reality is that we have to be investing in the R+D for energy sources other than fossil fuels now in order that we have the technology when we really do need them! Time will tell if the SG have made a super-astute move or not.
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