Hi Marcel,

> On Jul 4, 2019, at 2:24 AM, Marcel Taeumel <marcel.taeumel at hpi.de> wrote:
> 
> Hi, there.
> 
> I just got really confused by the differences of
> 
> [SystemNavigation allCallsOn: #drawOn:] bench.
> 
> and
> 
> [SystemNavigation default allCallsOn: #drawOn:] bench.
> 
> because I expected that MNU fallback to kick in to insert "default" automatically.
> 
> However, #allCallsOn: is actually implemented in Behavior and not just in SystemNavigation.
> 
> Can we remove SystemNavigation class >> #doesNotUnderstand: so nobody starts relying on that?

Tangentally, my feeling, and I know it was Andreas’ feeling too, is that all of

    SystemNavigation default ...
    SystemNavigation ...
    self systemNavigation ...

are a real mouthful.  Any abbreviation would be appreciated.  “Smalltalk ...” was much nicer and arguably more comprehensible.

> Best,
> Marcel
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