[Pharo-project] Explicit return in []

Hi this is early (at least to me) and I was asking myself a probably stupid question. But I would like to get your smart answers :) does a smalltalk like language really need explicit return in []? Q1 When are they absolutely required? Q2 What replacing mechanisms would be needed? Q3 What would we gain from an implementation stand point? It seems that in resilience lars removed them and more. Stef for Q1 I see foo x isZero ifTrue: [^ 33]. self continue