Because it is written in Squeak Smalltalk, Scratch does support late binding as illustrated by this script:
I could tweak the size slider while the program was still running to produce a whole variety of new coloured squares on top of the original squares:
For more on late binding see:
why learn etoys squeak?
morphic / etoys is superior GUI and programming development system
late binding references
etoys (late binding)
17 Indicators of Global Recession Are Clanging
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*The smart money is selling, of course, for the clanging indicators are the
dinner bell announcing the banquet of consequences has been served, and
Nemesis...
3 hours ago