With LtU being 10 years old, it seems appropriate to start recycling ancient underappreciated posts â€” especially those in the static HTML archive where commenting is no longer possible.

With Smalltalk-80 nominally turning 30 and PARC turning 40, 2010 is a fitting year to revisit Design Principles Behind Smalltalk by Daniel H. H. Ingalls, known to his German admirers as Daniel Ha-ha Ingalls.

Mentioned twice by Ehud in 2001 (here and here), Ingalls's piece should be filed under Visionary Languages. Alas, no such category exists on LtU.