When Sun killed Self in favor of Java the justification was that Self needed a 24MB workstation at a time when most clients still had 8MB machines. Java was tiny in comparison.

I complained that Java didn't do much beyond animating an odd little man and predicted that by the time it did half as much as Self it would need twice the memory.

He spells "Ungar", not Unger; the referenced PhD thesis was finished in 1986 at UC Berkeley; after the PhD Ungar went to Stanford and was a consultant for PARC.