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A comment on Are dynamic languages going to replace static languages? (2003). Parent comment

Re:Are dynamic languages going to replace static languages? ... by tester89 on Wednesday August 04, 2021 @05:14AM (#28058872)
Objective-C adopted some syntactic "quirks" from smalltalk, but they are not similar at a semantic level.
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Re:Are dynamic languages going to replace static languages? ... by skohan on Wednesday August 04, 2021 @05:55AM (#28059151)
What are the key differences? My understanding was that both languages are heavily built around message passing between objects and dynamic dispatch.
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Re:Are dynamic languages going to replace static languages? ... by gpderetta on Wednesday August 04, 2021 @06:22AM (#28059326)
In particular, similarly to Smalltalk and differently for example from C++, Objective-C does method dispatching from empty interfaces and has does-not-understand functionality.

Everything Is An Object in Smalltalk, and of course this can't be true in Objective-C due to its mixed heritage.

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Re:Are dynamic languages going to replace static languages? ... by andrekandre on Wednesday August 04, 2021 @01:38PM (#28063879)
in smalltalk you are always running inside of a live system, so if you made a mistake its immediate that it happened right then and there, but in obj-c its a code-build-run environment so the place you changed and the state you have to progress to to exercise that change are far away and you might not catch it until runtime / in the field.
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