Scenario: A group of people have recently heard the news that a videogame that they are excited for will include downloadable content at a later date. They claim that they will wait for the "Game of the Year Edition". However, the "GOTY" will only be available if the game sells enough units within the first few months. The group of people decide not to buy the original version of the game. As an effect, the game does not attain enough sales to warrant a "GOTY" edition, and thus does not get released as said version.
Is this a social trap?
What would have happened if half (or all) of them bought the game at its release?
Scenario: A time traveler goes back in time to change an event in the past. A person in the past becomes aware of this event and attempts to reverse the change.
Is this the grandfather paradox, or something else?
In theory, the actions done by the person in the past would be irrelevant because whatever the person in the future has done will have already been done, irrefutably, and irreversibly. Therefore, it does not matter what the person in the past does, the sequence of events would have already happened, and he wouldn't be able to do anything about it.
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