I did figure it out as a kid, but this story is sort of relevant. In Phantasy Star IV you have to use an item to break a barrier, and then again in a boss battle to not do 1 damage to the boss. I broke the barrier then had to stop playing for a month (I forget why, maybe I was in trouble and had my video game time revoked?). Anyways, I couldn't remember the item for the boss. Grinded until I was 50 levels past where I was supposed to be, Almost beat him, ran out of items except for THE item. Use the item. One shot kill him. Felt really dumb.