The exhibit models, their accompanying text, and the overall layout of the Rose Center organized the principal
contents of the solar system by objects of like properties,
rather than as enumerations of planets and their moons.
This decision landed Pluto among the growing number of
icy objects found beyond Neptune, and left it unmentioned
and out of view among our models for the rocky, terrestrial
objects (Mercury, Venus, Earth, and Mars) and the gas
giants (Jupiter, Saturn, Uranus, and Neptune). By this
organization, we practically abandoned the concept of
planet altogether
- Neil deGrasse Tyson, The Pluto Files
What is the main idea of this paragraph?

In act v of a midsummer night's dream, quince presents the prologue for “pyramus and thisbe.” when he finishes, hippolyta comments: indeed he hath played on his prologue like a child on a recorder—a sound, but not in government. which tone does the simile “played on his prologue like a child on a recorder” create? it creates a sad, wistful tone by comparing quince’s performance to a beautiful tune. it creates a surprised tone by comparing quince’s performance to an eloquent speech by a government official. it creates a relaxed tone by comparing quince’s performance to lovely recorder music. it creates a humorous tone by comparing quince’s performance to a child playing an instrument badly.