Read the sentences from Last Lecture by Randy Pausch. And if you’re curious about what zero gravity looks like, hopefully the sound will be working here. [slide shows videotape from Randy’s zero gravity experience] There I am. [laughter] You do pay the piper at the bottom. [laugher, as the people in the video crash to the floor of the plane on the video] So, childhood dream number one, check.

Why does Pausch show the audience a video of his zero-gravity experience?

to prove that people are curious about zero gravity
to show what being in zero gravity looks like
to prove that some astronauts do wear glasses
to show that being in zero gravity is painful

the illustration   that would give a reader a clear understanding of the text is a picture of men constructing the frame of a building.the frame is made of iron bars. the text describes the job of blacksmiths'. these were very organised and they had different names: "the driver" and "the heater". the text describes the way in which these men worked ; they worked iron pieces as if they were playing a sport. in fact, the text wants to show the men's skills. the text also puts some emphasis on the use of '' rivets'' in construction. this kind of nails were not always used in the construction of manhattan.

some examples:

"and with an underhand toss he hurled the smoking rivet straight at the catcher, who caught it in mid-air in his catching can." men's skills

"when the driver was ready for a new " the emphasis on the rivet ( special nail used in construction).

" it against a beam to remove any cinders, and jammed it into the waiting hole. " the emphasis on the rivet.

he can eat everything and drink whatever he wants

explanation:

if this is referring to star wars, han shot first.