Dr Tyson excluded Pluto from the American Museum of National History exhibit because it is considered an icy body and not a planet.
Originally, he identified Pluto as a comet from the Kuiper Belt of Comets, since its composition its mostly ice, and stated that if it came near the sun it would evaporate and grow a tail, an uncommon behavior for a planet.
Eventually, in the 1990s, icy bodies were found in the outer solar system, and the similarity between Pluto and them was evident. The conclusion was that both are made of ice, have similar strange orbits, and cross the orbit of other planets.
It foreshadows the outcome of the play. This is because it mentiones that they are dead. It allows you to guess what is going to happen next as both the lovers die and the families end their fued only after their children's death.
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New technologies have changed the whole world in scientific matters, social relationships, economy, health, nature, and we could go on with many more examples. One of the things that has been modified with this development is advertising. Now tech marketing is one of the main things to consider if you want to persuade people.
Actually, the classic way to advertise something has been left behind, after tech marketing and media.