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Simulations of the evolutionary dynamics of a collective-risk game with 
, and round number 
of 
and 
depicting the average contribution per round. We consider two treatments: (a) Possible contributions 0 or 
. (b) Possible contributions 0, 
, or 
. In both treatments we observe delayed contributions, irrespective of the total game length (averages over 
generations, 
, 
, 
, 
, 
, 
).
