On 10.03.2009, at 17:24, Thomas Kowark wrote:

> On Mar 10, 2009, at 5:15 PM, Bert Freudenberg wrote:
>
>> A: Because it messes up the order in which people normally read text.
>> Q: Why is top-posting such a bad thing?
>> (on-topic comment at bottom)
>
> Sorry for the top-posting. I will pay more attention to the  
> answering style in the future.
>
>> There are few things in Squeak that are impossible ;)
>>
>> Classes are just objects. I can modify the category instance  
>> variable for example. Or, I can modify SystemOrganization without  
>> informing the class. I can swap the identity of two classes. Etc.
>>
>> - Bert -
>
> So while it is possible, it is still pretty unlikely to happen when  
> developing let's say a regular web application and using only the  
> System Browser in order to alter one's application classes? I just  
> wasn't sure, if "regular" usage of Squeak as a development platform  
> can make this cache become invalid.


It shouldn't. However, this cache was only added recently (in 3.9  
iirc) so there might be some software out there that does weird  
things. The check is cheap so better leave it in.

- Bert -