wouldnât count on getting it done for the fair, though. The deadlineâs at the end of the semester.â
âIf it took longer, I could use the time machine to go back in time and show myself how to finish,â I said. âI could even make an extra time machine and carry it back in time to my present-day self.â
Hey! Was that what I had been doing yesterday?
No, probably notâin fact, Iâd seemed to be trying very hard
not
to tell myself anything about time machines.
Ms. Kang shook her head. âWouldnât that be cheating? The other kids only get a few weeks to work on their projects.â
She was right. Plus, that would be changing the past, and the one thing Future Me seemed completely certain about was that I/he shouldnât change the past.
But wait. If the only reason I wasnât changing the past was that Future Me was dead set against it, then by influencing
me
to not change the past, Future Me was doing exactly what he didnât want to do: changing the past. So in order to save Future Me from changing the past, did I have to change the past myself?
âYou okay there, Leo? Your face is all scrunched up.â
âSorry. I was just trying to think the whole time-travel thing through,â I said. Itâs all right, I told myself. I hadnât needed Future Leo to tell me changing the past was dangerous. I knew that already, all by myself. âSo if I canât build a time machine, got any other suggestions?â
âBut Leo, youâre usually so full of ideas! Remember that time you used mirrors and fiber-optic cables to project the view from the roof into the auditorium? Or when you and Jake tuned the toilets to play chords when they flushed? Why donât you do something like that?â
âFor my
science fair
project? But those things werenât real science! They didnât discover anything new or test any theories. They were just . . . fun.â That was one great thing about Poly. It may not be as rigorous as my siblingsâ schools, but the administration can be surprisingly tolerant. Any other school would kick you out for messing with the plumbing.
âThe science fair is supposed to be fun too,â Ms. Kang pointed out.
I shook my head. âNot if you come from
my
family. Science fairs are deadly serious. If I do some silly gag project, my brother and sisterâll disown me.â
âWow, that sounds like a lot of pressure,â said Ms. Kang. âYouâre not your brother and sister, you know. You have your own unique talents and interests.â
âI know,â I said. âThatâs the problem.â
âI canât see it as a problem. But if you really donât want to build one of your fun inventions, have you considered submitting something in the History of Science category?â
âHistory of Science? Is that even a category?â
She nodded, tugging down her sleeves. âSure. Itâs not as popular as some of the more hands-on ones, but itâs on the list. Youâd look at how some aspect of science or technology developed over time.â
âLike, write a library research paper instead of doing an experiment?â I liked that idea. No plants or mice to die on me.
Ms. Kang nodded again. âIt could be book research, or you could do some hands-on history. You could look at how scientific tools changed over time and how that affected the science. Like telescopes or clocks. Maybe you could build a model.â
âThe library has lots of books about science and history. But where would I find a bunch of antique telescopes and clocks?â I asked.
Ms. Kang said, âHave you ever heard of the New-York Circulating Material Repository?â
CHAPTER TWO
The New-York Circulating Material Repository
B efore I did anything else, I had to follow Future Meâs advice. That afternoon I hunted down
The Time Machine
and found a nice sunny corner in