On Sun, 31 Jan 2016, Chris Muller wrote:

>>> I guess the distinction between “Kernel” and “System” isn’t quite clear to me.
>>
>> I guess, for me, Kernel contains those things that are essential to a
>> running Smalltalk image. System contains stuff that's generally useful
>> to most things - most, but not all.
>
> I've long thought that we'll eventually move Array, OrderedCollection,
> Set and Dictionary to Kernel so that Collections could be unloaded...
>
>

You'd also have to move their superclass hierarchy, so that wouldn't 
really work.
There's no need to have a single "kernel" package containing all essential 
classes, so IMHO it's better to have many kernel packages.

Levente