Hi All,
It really comes down to a question of attitude: you either want to learn
something fundamental or core and so bootstrap yourself to a "better" place
(at least away from where you are), or you don't. As Marc said, Michal seems
to have erected a wall around his thinking.
I don't think it's fair to take pot shots at Frank for not wanting to
promote or further something he doesn't believe in. He's a regular
contributor to the list, who gives sound advice. He's also one of the few
experts on the list who is prepared to give statistical advice.
Regards, Mark.
Rolf Turner-3 wrote:
>
>
> On 23/07/2008, at 1:17 PM, Frank E Harrell Jr wrote:
>
>> Michal Figurski wrote:
>>> Hmm...
>>> It sounds like ideology to me. I was asking for technical help. I
>>> know what I want to do, just don't know how to do it in R. I'll go
>>> back to SAS then. Thank you.
>>> --
>>> Michal J. Figurski
>>
>> You don't understand any of the theory and you are using techniques
>> you don't understand and have provided no motivation for. And you
>> are the one who is frustrated with others. Wow.
>
> Come off it guys. It is indeed very frustrating when one asks ``How
> can I do X''
> and gets told ``Don't do X, do Y.'' It may well be the case that
> doing X is
> wrong-headed, misleading, and may cause the bridge to fall down, or
> the world to
> come to an end. Fair enough to point this out --- but then why not
> just tell
> the poor beggar, who asked, how to do X?
>
> The only circumstance in which *not* telling the poor beggar how to
> do X is
> justified is that in which it takes considerable *work* to figure
> out how to
> do X. In this case it is perfectly reasonable to say ``I think
> doing X is
> stupid so I am not going to waste my time figuring out for you how
> to do it.''
>
> I don't know enough about the bootstrapping software (don't know
> *anything*
> about it actually) to know whether the foregoing circumstance
> applies here.
> But I suspect it doesn't. And I suspect that you (Frank) could tell
> Michal in
> a few lines the answer to the question that he *asked* (as opposed,
> possibly,
> to the question that he should have asked).
>
> If it were my problem I'd just write my own bootstrapping function
> to apply
> to the problem in hand. It can't be that hard ... just a for loop
> and a
> call to sample(...,replace=TRUE).
>
> If you can write macros in SAS then .....
>
> cheers,
>
> Rolf
>
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