Sometimes utility isn't logarithmic, especially in the very short term. If you have exactly $1000 to buy in to a very profitable tournament, you arne't taking a coinflip for $10 to win $50. OTOH, the time I left my wad in the hotel (30 minutes away), and had about half a buyin in my wallet, taking one shot at a doubleup on the craps table (yay 7 out of the chute) to be able to get a seat in a good game was clearly immediately -EV, but overall +EG.
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