(c) It's not true that time travel is possible. For if I travel back in time and kill my grandfather, I will be born and unborn. But I will not be born and unborn. And I will travel back in time and kill my grandfather, provided time travel is possible.
(c) It's not true that time travel is possible. For if I travel back in time and kill my grandfather, I will be born and unborn. But I will not be born and unborn. And I will travel back in time and kill my grandfather, provided time travel is possible.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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please make detailed formalization for (c)
Transcribed Image Text:Formalize the following arguments in Li providing a suitable
dictionary. Make your formalization as detailed as possible. If
you find an ambiguity in the argument, explain it to justify
your choice of formalization.
(a) Neil won't complain if he sings. But he doesn't sing.
Therefore he will complain.
(b) If we are alive, our death is not present and our death is
nothing to us. If we are dead, we are not present and our
death is nothing to us. So our death is nothing to us,
since we are either dead or alive.
(c) It's not true that time travel is possible. For if I travel
back in time and kill my grandfather, I will be born and
unborn. But I will not be born and unborn. And I will
travel back in time and kill my grandfather, provided time
travel is possible.
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