One Answer

  1. You can – you can't… restrictions by the rules of the game (law, morals).

    Possible – impossible… limitations of nature, the laws of physics, the level of necessary knowledge and technical capabilities.

    For example, it is possible to send a person to Mars, but it is not yet possible (this is tantamount to murder)… You can build an elevator to the moon (not prohibited), but it is not yet possible ))

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