the observed distinction between a particle and an antiparticle does not necessarily establish that this distinction is fundamental at the level of the full underlying structure, or that it must apply in exactly the same way to every particle

the observed distinction between a particle and an antiparticle does not necessarily establish that this distinction is fundamental at the level of the full underlying structure, or that it must apply in exactly the same way to every particle
the difference between the structure of the state and the set of possible transitions from it.
"-Hmm" may be the moment when not the object of the problem itself has changed, but what transitions to it have become available for use.
різниця між структурою стану та множиною можливих переходів із нього.
«-Хм» може бути моментом, коли змінився не сам об’єкт задачі, а те, які переходи щодо нього стали доступними для використання.
the past and present may differ not only in the structure of their states, but also in the sets of possible transitions from them
минуле і теперішнє можуть різнитися не лише структурою стану, а й множиною можливих переходів із нього