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Re: [amibroker] Vertical Lines



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LOL Peter.  You are determined to make this into 
a Ph.D. thesis.  I will only add a few comments and let you get on with 
your life's work:
 
 
<BLOCKQUOTE 
>
snip
 
Sheldon Natenburg" Beyond the question of exact 
distribution..the normal distribution has one serious flaw..its symmetrical" 
p61Option Volatility and Pricing
 
Secondly Black Scholes uses normally distributed BUT 
its a continuous time model and assumes volatility is constant over the life 
i.e continuously compounded. The effect of these two assumptions is that 
possible prices are LOGNORMALLY distributed.  This is how they intoduce 
leptokurtosis (fat tails).
 
Yes, my fingers ran ahead of my head, 
which is not unusual.  We don't want negative prices do we, so yes my 
comment should have said lognormal or binomial or something along those lines, 
which within the accuracy of this stuff does not change anything.  
Whether or not there is a known basis for Gann's Square of 9 it doesnot 
detract from the fact that it works, and absent any evidence to the contrary 
it reasonable to assume that it will continue to do so for at least 60 more 
years ;-).  It is in the same category as all other technical analysis 
tools in which we have correlations but no known 
cause. 
 
 
snip 
 
If techniques are to be used such as Gann with 
implicit assumptions it is important to understand them.
 
snip
 
 
What do you mean by understand?  
If by understand you mean the reason for the technique working then you are 
wrong.  Nobody understands any technical analysis in that sense, and 
need not in order to use it profitably.  If you mean understanding 
in a practical utilitarian sense then I agree.  In this regard, the 
assumptions (as you put it) pertain to knowing the appropriate boundary 
conditions (e.g., time, volatility, phase of moon, etc.) for which the 
analysis works.  We have correlations and that is all.  Not an 
exercise for theoreticians, but one for a bunch of laboratory 
grunts.
 
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