AlanKay said that it is hard to change a system if
you have to worry about backwards compatibility and
keeping your legacy running.  Progress means leaving
the old world behind.  

Therefore, burn the diskpacks.

The advice was given to the smalltalk team on their completion of smalltalk-78, the first really well engineered implementation of the language. (They didn't burn em, and smalltalk evolution has stalled since then.)


	http://c2.com/wiki/diskpack.jpg
	Alto with
	diskpacks.

See EarlyHistoryOfSmalltalk for more details of the very interesting context in 1976 when AlanKay most famously said this.
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