Why does william wordsworth place the central idea where it is?
i wandered lonely as a cloud
that floats on high o'er vales and hills,
when all at once i saw a crowd,
a host, of golden daffodils;
beside the lake, beneath the trees,
fluttering and dancing in the breeze.

continuous as the stars that shine
and twinkle on the milky way,
they stretched in never-ending line
along the margin of a bay:
ten thousand saw i at a glance,
tossing their heads in a sprightly dance.

the waves beside them danced; but they
out-did the sparkling waves in glee:
a poet could not but be gay,
in such a jocund company:
i gazed-and gazed-but little thought
what wealth the show to me had brought:

for oft, when on my couch i lie
in vacant or in pensive mood,
they flash upon that inward eye
which is the bliss of solitude;
and then my heart with pleasure fills,
and dances with the daffodils.

it allows readers to discover the lesson the same way he did.

it begins with the important information first to generate interest.

it creates a "mid-point" so that the central idea serves as an anchor.

it appears in the title of the poem so that the reader always knows.

It allows readers to discover the lesson the same way he did.

Explanation:

In this poem, William Wordsworth describes his experience in the same order in which it took place. He begins the poem by describing his wanderings, and ends it by describing the effect that this had on him. The reason why Wordsworth placed the central idea at the end of the poem was because he wanted to allow readers to discover the lesson in the same way and the same order in which he did.

horror and alarm

this is shown in the exserp then he beat at the door and called, but none responded, and for wrath he could have dashed the door down, but it was too stout, and he had no weapon; for his arms had been taken from him.when it was dark, suddenly it seemed to sir lancelot that the room smelled foul, as if he had been carried into the midst of the quaking marsh, and was sunk deep in the slime and weeds of a pool. then, through the arrow-slit, he saw many strange lights come, dim and blue like the wild lights that dance and flit over the lonely marshes by night; but that which made him   marvel was that these lights were two together, as if they were the eyes of evil things. and they came up to him with a breath that was cold and dank, and they seemed to peer into his face, but he could see naught of their bodies. the hair upon his head rose, and his skin went cold. they pressed all about him, and to defend himself he struck at the eyes, but his blows beat only the air. then suddenly sir lancelot felt sharp pains, as if small keen knives had been thrust into his flesh at many places. the stabs increased in number and in pain, and sir lancelot beat about himself and ran to and fro in the narrow chamber to escape   the evil eyes and the stabs, but it was in vain, and thus all night in much misery he suffered. when for sheer weariness he lay down and tried to close his eyes, the evil things would not let him, but ever they tore at him and stabbed him.

the answer is backup