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Very good question. I'm very curious to know how pros do it.

mental sanity? :D

I agree. Variance, standard deviation, mean, etc, are parameters that belong to a distribution, and give information about it. The better values are simply the values that belong to the distribution that better describes my process

humility and modesty, for example

Mentioning the Cauchy distribution can actually be of some help. I was able to get some more information. Thanks. Yes, I know that an integral can diverge, but it doesn't have to. Not having some calculations to look at, I was looking at what the meaning of variance should be, and also the...

I wasn't even thinking about contesting Mandelbrot. It's hard to do that if I don't understand what he is talking about. To me the variance must be finite. Happily I am not the only one :). On the same page Kurtosis seems to give an explanation, but I'll have to think about it. That definition...

This is getting complicated. How can a distribution have infinite variance? I couldn't find much on the internet

What distribution did you use?

That might be true. I honestly don't understand why people let Beckham play, with England and with Real Madrid. I think it was a good choice to leave him out in the last match.

Have you done it? Do you find it "cheap"?

I disagree. England don't have a great team, but they don't play crap football. And with good players like Rooney, Cole, Gerrard, there are good possibilities for the future. A lot of very good players playing in England are foreigners. Spain is in the same situation

I realize that I might cause a lot of flames, but I have to say that sometimes I like to look at the Yahoo boards. Although there a lots of useless messages, I can find sometimes something interesting. One of the messages I found is about a way to start a squeeze buying options. There is...

that would mean anyway trading based on insider info you know nothing about. Looks dangerous, doesn't it?

the JVM is far from perfect, so of course it's possible. I would first consider the possibility of a TWS issue, though. Or something in your machine. Of course it could. But in that case the entire machine should slow down, not only TWS. Try to kill the process from the task manager, or stop...

buy a tempest proof machine

Guys, thank you for the asnwers. I've been wondering for a while about this need to be right, never having a clear picture. I'm starting to get the idea.

David, please, can you make one or two examples? Whether you need to be right or not, when you see you are losing you stop, I guess. Was the need to be right bringing this guy to hold his position even while losing? Was he trading against the trend? Was he putting too much money in each trade...

Because there are innocuous reasons why stock may not get to the purchaser on time, such as paperwork delays, it's impossible to tell how many of those shares, known as failures to deliver, can be blamed on naked short sales Sorry if this is a stupid question, but isn't all electronic? What...

I understand. I think I would consider the BP, to take the different leverages in account. In that way a trader with 5k in the account and 500k BP is not necessarily better than a trader with 5k and 100k BP. Oh well, thanks for the info

It's impossible to learn without a mentor, but the only way to do it is by yourself? :confused: