[Lazarus] Release 1.0, part 2

[Mehmet Erol Sanliturk]

Vincent Snijders wrote:
> Mehmet Erol Sanliturk schreef:
>>
>>
>> Unfortunately , there is a concept < law of conservation of bugs >
>> mentioned in the page
>>
>> http://www.site.uottawa.ca:4321/oose/index.html#lawofconservationofbugs
> 
> Does that mean, we should stop fixing bugs, because you only get more?
> 
> Vincent
> 
> -- 
> 


No , it says that fixing bugs will generate new bugs .
Also , please , consider the law about relation between size of software 
and number of bugs .

Such concepts make fixing bugs a natural situation and this is not a 
fault of the developers : It is caused by complexity of software and 
capability level of human beings . The goal is to reduce number of bugs 
as much as possible in a level that they do not make unbearable damages .


Personally , I am encountering this situation sometimes .


Assume in a program there a three parts :


.
.
.
Part One
.
.
.
Part Two
.
.
.
Part Three
.
.
.


I am getting a bug in Part Two . I do not know that the cause is in Part 
One . I am fixing Part Two .
Part Three is using Part Two . Fixing Part Two is generating a bug in 
Part Three . I am Fixing the Part Three .


Everything is going well .

Later on I realize that there is a bug in Part One . I am fixing it .
This is causing a bug in Part Two .

I am fixing Part Two .

This is causing a bug in Part Three .
I am fixing Part Three .


This is continuing in chain like the above steps .

The pages listed in my previous message is to emphasize this point :

In a complex software ( which its total comprehension is beyond human 
capability ) occurrence of bugs is natural and fixing those bugs is an 
unavoidable step . Then the main point is to eliminate damaging bugs as 
much as possible .

Another fact is that no one of any complex software is able to stay 
fixed over time because all of them are used in a dynamic environment .
Changes in this environment is generating a bunch of new bugs to fix .


Then life is going in that way .


If we stop fixing bugs , we encounter < software rot > situation .


Thank you very much .


Mehmet Erol Sanliturk