The answer to this question is in Auden's words "for instance". His poem is not specifically about Icarus and his tragedy. It transcends this particular story, elevating its message to the highest, universal level. The poem is about suffering as an integral constituent of life. People are often completely unaware of other people's suffering. The Icarus motif is just an example, albeit a very drastic one. It serves as the poem's climax. The "delicate ship" is on its course and it keeps sailing, although the crew must have seen "a boy falling out of the sky". In other words, the strange death of a young boy changes nothing in the course of other people's lives. That is why, unlike Williams' poem, this one doesn't even have Icarus in its title, but the Museum. It deals with the relations of life vs. death and art vs. reality, rather than Icarus' tragic story.
Conjunctive adverbs connect one clause to another clause, or one idea to another idea:
Joanne was very good at math; however, she is not good at English.
Descriptive adjectives can be separated with commas in a sentence such as:
Joanne did not want to pet the smelly, wet dog.
Required Minimum Distributions (RMDs) generally are minimum amounts that a retirement plan account owner must withdraw annually starting with the year that he or she reaches 72 (70 ½ if you reach 70 ½ before January 1, 2020). mark me brainiest please