Why does each trick explained in “cool eye tricks" end with a section entitled “what happened? "
this part of the text provides readers with an unexpected twist or surprise, which only
works at the end of each passage.
it is only after the steps for completing each trick are laid out that readers are ready to
understand why the trick works.
because the details of the tricks are explained in steps by order of importance, the
"what happened? " section reveals the least important details.
each trick is explained spatially, and the “what happened? " section describes each
trick based on what the writer observes last.