mathematics and music are the only 2 sciences which are appreciated and no one notices anything else, why

Much of what goes on in Laputa seems to be related to the curse of being smart but impractical. Although the people of Laputa are very intelligent, it gets them little. With their slanting heads, they do not see things directly as they are. They seem to have no common sense, which for someone like Swift, who cares a great deal about the material world, may be more important than raw intelligence. Because of their lack of sense, they spend too much time worrying about ridiculous things rather than noticing what is really wrong in their own lives. They are so unaware that the men do not know that their wives cheat on them. This emasculating fact is all too common for the unmanly intellectual.