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URGENT Question about A-> notB :))

orangetree_23orangetree_23 Live Member
in Logic Games 22 karma

Hi!
I was wondering,

How come we can use the same notation A -> notB to represent both cases of:
1. "A and B cannot be both selected" for in/out games AND
2. "A and B cannot be added to the same group" for grouping games,

when in the first scenario, it means at least one of them, A/B has to be in the OUT group,
but for the second scenario, it means that it's either A in Group 1 and B in Group 2, or vice versa,
instead of A/B in Group 1 (or 2).

Basically, I would like to know why we can use the same notation for two scenarios that end up in different assignments.

Thanks in advance for your help!! :)

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Comments

  • maco4538maco4538 Alum Member
    323 karma

    yes

  • Matt SorrMatt Sorr Alum Member ⭐
    2245 karma

    For in-and-out games, you're being told they can't both be in the in-group. That means at least one must be in the out-group. So both are allowed to be together in the out-group, or just one in the out-group, but they can't be together in the in-group. For typical grouping games, the type of rule you're referring to just flat-out tells you the game pieces aren't allowed to be together in any group. No ifs, ands, or buts. So for the in-and-out game, the groups are characteristically different because one of the groups is for selected items and the other is for non-selected items. That's why the rule, visually speaking, applies differently to the groups. For a typical grouping game, however, all groups are "in-groups," in that every game piece is in play. So the rule applies to each group the same.

    Does this make sense?

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